Follow the in-text links in the story to original source documents obtained from the FBI and annotated by The Commercial Appeal.
At the top of the stairs he saw the blood, a large pool of it,  splashed across the balcony like a grisly, abstract painting.  Instinctively, Ernest Withers raised his camera. This wasn't just a  murder. This was history.
Dr. Martin Luther King Jr. stood here a few hours earlier chatting  with aides when a sniper squeezed off a shot from a hunting rifle.
Now, as night set over Memphis, Withers was on the story.
Slipping past a police barricade, the enterprising Beale Street  newsman made his way to room 306 at the Lorraine Motel - King's room -  and walked in. Ralph Abernathy and the others hardly blinked. After all,  this was Ernest C. Withers. He'd marched with King, and sat in on some  of the movement's sensitive strategy meetings.
A veteran freelancer for America's black press, Withers was known as  "the original civil rights photographer," an insider who'd covered it  all, from the Emmett Till murder that jump-started the movement in 1955  to the Little Rock school crisis, the integration of Ole Miss and, now,  the 1968 sanitation strike that brought King to Memphis and his death.
As other journalists languished in the Lorraine courtyard, Withers' camera captured the scene:
Bernard Lee, tie undone, looking weary yet fiery.
Andrew Young raising his palm to keep order.
Ben Hooks and Harold Middlebrook gazing pensively as King's briefcase sits nearby, opened, as if awaiting his return.
The grief-stricken aides photographed by Withers on April 4, 1968,  had no clue, but the man they invited in that night was an FBI informant  - evidence of how far the agency went to spy on private citizens in  Memphis during one of the nation's most volatile periods.
Withers shadowed King the day before his murder, snapping photos and 
telling agents about a meeting the civil rights leader had with suspected black militants.
He later 
divulged details gleaned at King's funeral in Atlanta,  reporting that two Southern Christian Leadership Conference staffers  blamed for an earlier Beale Street riot planned to return to Memphis "to  resume . support of sanitation strike'' - to stir up more trouble, as  the FBI saw it.
The April 10, 1968, report, which 
identifies Withers only by his confidential informant number - 
ME 338-R  - is among numerous reports reviewed by The Commercial Appeal that  reveal a covert, previously unknown side of the beloved photographer who  
died in 2007 at age 85.
Those reports portray Withers as a prolific informant who, from at  least 1968 until 1970, passed on tips and photographs detailing an  insider's view of politics, business and everyday life in Memphis' black  community.
As a foot soldier in J. Edgar Hoover's domestic intelligence program,  Withers helped the FBI gain a front-row seat to the civil rights and  anti-war movements in Memphis.
Much of his undercover work helped the FBI break up the Invaders, a  Black Panther-styled militant group that became popular in disaffected  black Memphis in the late 1960s and was feared by city leaders.
Yet, Withers focused on mainstream Memphians as well.
Personal and professional details of Church of God in Christ Bishop 
G.E. Patterson (then a pastor with a popular radio show), real estate agent 
O.W. Pickett, politician O. Z. Evers and others plumped FBI files as the bureau ran a secret war on militancy.
When community leader 
Jerry Fanion took cigarettes to jailed Invaders, agents took note. Agents wrote reports when 
Catholic Father Charles Mahoney befriended an Invader, when car dealer 
John T. Fisher offered jobs to militants, when 
Rev. James Lawson planned a trip to Czechoslovakia and when a 
schoolteacher loaned his car to a suspected radical.
Each report has a common thread - Withers.
As a so-called 
racial informant - one who monitored race-related politics and "hate'' organizations - Withers fed agents a steady flow of information.
Records indicate he snapped and handed over photos of 
St. Patrick Catholic Church priests who supported the city's striking sanitation workers; 
he monitored political candidates, 
jotted down auto tag numbers for agents, and 
once turned over a picture of an employee of the U.S. Civil Rights Commission  said to be "one who will give aid and comfort to the black power  groups." In an interview this year, that worker said she came within a  hearing of losing her job.
"It's something you would expect in the most ruthless, totalitarian  regimes, '' said D'Army Bailey, a retired Memphis judge and former  activist who came under FBI scrutiny in the '60s. The spying touched a  nerve in black America and created mistrust that many still struggle  with 40 years later.
"Once that trust is shattered that doesn't go away, '' Bailey said.
In addition to spying on citizens, Hoover's FBI ran a covert  operation, called COINTELPRO, a counterintelligence or "dirty tricks''  program that attempted to disrupt radical movements. It did this with  tactics such as leaking embarrassing details to the news media,  targeting individuals with radical views for prosecution or trying to  get them fired from jobs. First launched in the 1950s to fight  communism, by 1967 it was aimed at a range of civil rights leaders and  organizations deemed to be threats to national security. Congressional  inquiries later exposed it for widespread abuse of personal and  political freedoms, including a fierce campaign against King.
Yet much of the detail of the FBI's domestic spying, including the  inner workings of its informant network in Memphis, remain untold.  Tracing Withers' steps through thousands of pages of federal records  reveals substantial new details about the extent of the FBI's  surveillance of private citizens.
In Withers, who ran a popular Beale Street photography studio  frequented by the powerful and ordinary alike, the FBI found a  super-informant, one who, according to an FBI report, proved "most  conversant with all key activities in the Negro community.''
"He was the perfect source for them. He could go everywhere with a  perfect, obvious professional purpose, '' said Pulitzer Prize-winning  historian David Garrow, who, along with retired Marquette University  professor Athan Theoharis, reviewed the newspaper's findings .
Many political informants from the civil rights era were unwitting, unpaid dupes. Yet Withers, 
who was assigned a racial informant number and produced a large volume of confidential reports, fits the profile of a closely supervised, paid informant, experts say.
"It would be shocking to me that he wasn't paid, '' said Theoharis,  author of the books "Spying on Americans" and "The Boss: J. Edgar Hoover  and the Great American Inquisition".
"Once you get to this level if you're a criminal informant versus a  source of information they're at a higher level. They're controlled.  They're supervised, '' said Theoharis, who discerns a valuable lesson in  the revelation of Withers' political spying.
"It speaks to the problem of secrecy. The government is able to do  things in the shadows that are really questionable. That goes to the  heart of our (democratic) society.''
It's uncertain what impact the revelation will have on Withers'  legacy. The photographer was lionized in the final years of his life.  Four books of his photography were published, exhibits of his work made  international tours and a building on Beale Street was named for him.  Congressman Steve Cohen proposed a yet-unfunded $396,000 earmark for a  museum, set to open next month, to preserve Withers' archives.
Yet, even 40 years after the fact, the FBI still aggressively guards  the secret of Withers' activities. The one record that would pinpoint  the breadth and detail of his undercover work - his informant file -  remains sealed. The Justice Department has twice rejected the  newspaper's Freedom of Information requests to copy that file, and won't  even acknowledge the file exists.
Responding to the newspaper's requests, the government instead  released 369 pages related to a 1970s public corruption probe that  targeted Withers - by then a state employee who was taking payoffs -  carefully redacting references to informants - with one notable  exception.
Censors overlooked a single reference to Withers' informant number.  That number, in turn, unlocked the secret of the photographer's 1960s  political spying when the newspaper located repeated references to the  number in other FBI reports released under FOIA 30 years ago. Those  reports - more than 7,000 pages comprising the FBI's files on the 1968  sanitation strike and a 1968-70 probe of the Invaders - at times  pinpoint specific actions by Withers and in other instances show he was  one of several informants contributing details.
Witness accounts and Withers' own photos provided further corroborating details.
"This is the first time I've heard of this in my life, '' said  daughter Rosalind Withers, trustee of her father's photo collection, who  said she wants to see documentation before commenting at length.
"My father's not here to defend himself. That is a very, very, strong, strong accusation. "
A son, Rome Withers, who runs his own Memphis photography business,  said he, too, was unaware of his father's secret FBI work, but doesn't  believe it diminishes his courageous work documenting the civil rights  movement.
"He had been harassed, beaten, shot at. He was a victim'' who often  faced hostile mobs and violent police forces. "At that time, when you  are the only black on the scene, you're in an intimidating state.''
Andrew Young, now 78, said he isn't bothered that Withers secretly worked as an informant while snapping civil rights history.
"I always liked him because he was a good photographer. And he was  always (around), " he said. Young viewed Withers as an important  publicity tool because his work often appeared in Jet magazine and other  high-profile publications. The movement was transparent and didn't have  anything to hide anyway, he said.
"I don't think Dr. King would have minded him making a little money on the side.''
There was a time in 1968 and 1969 when Lance "Sweet Willie Wine''  Watson was considered the most dangerous man in Memphis. As "prime  minister'' of the Invaders, a self-styled militant organization whose  rhetoric included overthrowing the government, Watson frightened black  and white Memphians alike. The FBI assembled a huge file on him.
Today, Watson, who goes by the name Suhkara Yahweh, is more  conciliatory. He runs a community development organization in his  impoverished South Memphis neighborhood and ministers to youths and the  needy.
Still, he decorates his living room with mementos: A bumper sticker  reading "Damn the Army, Join the Invaders''; a glass case containing a  military-styled jacket with "Invaders'' emblazoned on the back; and a  portrait of Ernest Withers displayed prominently over his fireplace.
"That's my daddy, '' Yahweh, 71, said one afternoon last winter, relating how Withers often gave him money and advice.
"If he was (an informant) I don't know anything about it ... He would  call me his son. Right now, I'm still part of the family. I talked to  Rome (son Andrew Jerome Withers) just the other day. I talked to  (Ernest) on his death bed.''
It's a testament to the FBI's effectiveness that the dreaded "Willie  Wine'' had no clue that Withers was constantly informing on him.
Wine was in Atlanta possibly to "con'' money out of the SCLC, reports indicate the informant told agents. He reported Wine's girlfriend was pregnant; that Wine was a thief. That 
Wine and his cohorts had cat-called voting rights activist Fannie Lou Hamer at a gathering at old Club Paradise.
As informant ME 338-R, 
Withers  had plenty to tell the FBI in November 1968 when Willie Wine and others  seized the administration building at LeMoyne-Owen College. What  started as a dispute over student grievances escalated into rebellion  when student leaders called in the Invaders and the local chapter of the  radical anti-war group, Students for a Democratic Society.
Withers, who shot pictures of the crisis for Jet and was seen by  newsmen going into Brown Lee Hall the night of the takeover, told FBI  agents that Wine planned and directed the operation.
ME 338-R said the building was held "in a state of siege''  with school president Hollis Price inside, according to a Nov. 27,  1968, FBI report. Although local news accounts made no mention of  weapons, the informant said occupants "definitely had a single-barrel  12-gauge shotgun, a rifle with a telescopic sight, a bayonet, at least  one Derringer, and one pistol'' - details confirmed by another FBI  source that night and Willie Wine 42 years later.
"I carried a .25-caliber pistol, '' the ex-militant recalled. The  only time he used his gun that night was when another Invader rifled  through an administrator's cabinet. "I pulled out my pistol. I said  we're not here for that purpose, '' he said.
No charges were filed after officials at the private school chose not to prosecute.
Over time, however, the FBI would break the Invaders. Utilizing tips  from Withers and other informants plus three undercover Memphis police  officers who had infiltrated the group, 
authorities prosecuted as many as 34 Invaders on charges ranging from petty street crime to arson and the sniper wounding of a police officer.
Although one undercover cop was famously exposed, the Invaders seemed  to have little clue about Withers, who often visited the group's  headquarters on Vance and shot publicity photos for them.
"Ernest, he was a dear friend, " said Charles Cabbage, who founded  the Invaders in 1967. Like Wine, Cabbage kept a memento on the wall, a  picture Withers took in 1968 of Cabbage as a radical.
"Anytime he'd see us, he'd start snapping, " Cabbage recalled.  Cabbage, interviewed last winter, four months before his death in June  at age 66, said he'd come to wonder what Withers was really doing.
"C'mon man. We weren't that interesting. Why would he take our pictures constantly?"
As the FBI cast its net, it encountered a range of people whose  beliefs and personal details landed in the bureau's spy files despite  little more than a tangential connection to the Invaders.
An Aug. 7, 1969, report shows the 
FBI collected 14 photographs of Father Charles Mahoney of St. Patrick Catholic Church.  Notations on the report, along with other corroborating details,  indicate Withers shot the photos and handed them over to agents. The  report quotes the informant as saying Mahoney "is a close friend'' of  Invaders defense minister Melvin Smith and notes that Mahoney and two  other priests allowed the Invaders to use church facilities.
"The FBI was off base on the civil rights thing, '' one of those  priests, Charles Martin, said in a recent interview. An urban outreach  ministry brought St. Patrick in regular contact with the Invaders. And  when the priests there openly supported the sanitation strike, there was  a backlash, Martin said.
"We were for the workers, the sanitation workers. And a lot of people in the town didn't like us for that.''
The Rev. James M. Lawson came into the FBI's focus in early 1968  during the height of the sanitation strike. It was Lawson, then pastor  at Centenary Methodist, who invited Dr. King to Memphis, where he spoke  in support of 1,100 sanitation workers who had walked off the job to  protest low pay and horrid working conditions that led to the deaths of  two men.
"If one black person is down, we are all down!'' King told 15,000 cheering people at Mason Temple the night of March 18, 1968.
Near the speaker's podium, the ubiquitous Withers snapped photos.  Images he shot that night would stand as timeless icons of the strike  alongside those he took of marching sanitation workers carrying "I Am A  Man'' placards and National Guard troops policing Downtown streets.
But the stout photographer with a chatty personality and quick smile  had another, nonpublic, appointment that day, a secret meeting in which  the topic was his friend, Rev. Lawson.
Earlier that afternoon, Withers met with FBI agents Howell Lowe and  William H. Lawrence, who ran the bureau's Memphis domestic surveillance  program. A report summarizing the meeting indicates 
informant ME 338-R handed over a newsletter  listing names and photographs of community leaders behind the strike - a  virtual directory of strike-support organizers - and told agents who  produced it.
"Informant pointed out that the paper is printed or laid out by Rev.  Malcolm D. Blackburn ... pastor of Clayborn AME Temple ... The main  editorial work therein is done by Rev. James M. Lawson Jr., '' the  report said.
Withers had a lot to say about Lawson,  a veteran civil rights leader and friend who marched during the strike  alongside Withers' wife, Dorothy, and his daughter, Rosalind.
He portrayed Lawson as the type of left-leaning radical the government had come to fear  - active in the anti-war movement, involved with the feared Student  Nonviolent Coordinating Committee and someone who was planning a trip to  the East Bloc nation of Czechoslovakia.
"I'm not surprised, '' Lawson, now 81, said this month when told of  Withers' informant work. Lawson said "the police and FBI were very  clever about entrapping'' blacks and making them informants.
"Any activity in the black community, Ernie was going to be around,  '' Lawson said. "It was probably done innocently: 'You just tell us  what's going on and what you see and you get paid for it.' ''
Lawson's was one of many biographies the informant would flesh out for agents.
Reports linked to Withers show he was a font of information for the  FBI during the strike, handing over documents, providing details from  strategy meetings, connecting dots between pastors and suspected  militants .
The informant told agents on March 6 that young militants - Cabbage  among them - passed out literature at a rally at Clayborn Temple with  instructions for making Molotov cocktail firebombs. Mainstream leaders  "did nothing'' to stop them, the report said.
On April 3, the day before King's murder, the informant passed on 
details about a high-level strategy session at the Lorraine between Cabbage and King, who begrudgingly decided to give the young militants a role in the strike.
Well into the summer, after the strike was settled, ME 338-R continued to report on its impact. That July 26, 
the informant gave FBI agents a financial report  showing the strike-leadership group, Community on the Move for  Equality, had spent $2,600 of $347,000 raised for striking workers to  pay attorney's fees and expenses for members of the militant Black  Organizing Project, an umbrella group encompassing the Invaders.
As Hoover cranked up his campaign against "black nationalist hate  groups, '' anyone giving aid - money, jobs, political support - could  fall into the crosshairs of COINTELPRO, the FBI's dirty tricks campaign.
The FBI had been spying on the civil rights movement for years, but  in an August 1967 memo, backed by a more thorough order the following  March, the bureau directed Memphis and other field offices to begin  efforts to "to expose, disrupt, misdirect, discredit or otherwise  neutralize" a range of civil rights leaders and organizations, from the  separatist Nation of Islam to King's moderate SCLC.
In May 1968 a similar initiative was launched against the so-called  "New Left, '' targeting Vietnam War protesters and socialists, among  others.
A U.S. Senate investigation in 1975 found widespread abuse in the  program, which lacked statutory or executive approval. COINTELPRO  techniques ranged from contacting an employer to get a target fired to  mailing an anonymous letter to a spouse alleging infidelity, leaking  humiliating information to the press, encouraging street warfare between  violent groups and alerting state and local authorities to a target's  criminal law violations.
Available records provide few details on specific COINTELPRO actions  taken in Memphis. Yet, records indicate Withers fed agents plenty of raw  material.
A schoolteacher loaned militant Cabbage his car, the informant said. 
Mary L. Campbell, a supposed black-power sympathizer, was running for the county Democratic Party's executive committee. Real estate agent 
O.W. Pickett, who'd brought food to the Invaders during the LeMoyne takeover, was thinking of running for Congress. 
Pastor Malcolm Blackburn and activist Baxton Bryant were trying to find jobs for the Invaders.
A May 13, 1968, report indicates 
Withers gave the FBI two photos of Rosetta Miller,  a field worker for the U.S. Civil Rights Commission, telling an agent  she is "one who will give aid and comfort to the black power groups."  Following up that fall, an agent typed a two-sentence report  memorializing a rumor that Miller had recently married, noting the  marriage broke up after just a week. The report was copied to Withers'  informant file.
Interviewed this spring, Miller, who now lives in Nashville , said  her job with the commission came into jeopardy in 1968 when supervisors  questioned her about ties to radicals.
"I was never part of that crap, " she said.
Marquette's Theoharis, who worked with the Senate committee that  exposed many of the FBI's abuses, said employment sabotage was a  particularly insidious COINTELPRO tactic.
"Once, (the FBI) got someone dismissed as a Girl Scout leader. It was crazy, " he said.
Records reviewed by the newspaper offered few details of the  secretive COINTELPRO initiative. Yet, frustrated by continuing support  for the Invaders, the 
FBI clearly was considering such actions in May 1969 against the African Methodist Episcopal Church.
"All sources have been alerted to attempt to pinpoint any actual  proof that employees of the AME Church are giving financial support to  the Invaders, " said a May 8, 1969, report to headquarters in  Washington.
"...If such proof is forthcoming separate communication will be  written to the Bureau concerning any possible counterintelligence action  which might be instituted with certain AME high church officials in  this regard.''
Available files don't indicate how or when Withers first teamed with the FBI.
But it would have been hard for the bureau to have overlooked him.
Withers served as a city police officer, hired in 1948 along with  eight other African Americans who composed MPD's first black recruit  class. He didn't last long. He was fired in 1951 for taking kickbacks  from a bootlegger.
By the early 1950s, Withers was making a name for himself on Beale  Street, where he had operated since the mid-40s, chronicling the teeming  night life and the everyday life of black Memphis. By night, he hung  with bluesmen like B.B. King, Bobby "Blue'' Bland, Junior Parker and  Rufus Thomas and, by day, he shot family portraits, weddings, church  socials, political gatherings and sporting events, assembling one of the  great Negro League baseball portfolios.
"He knew everybody," recalled Coby Smith, a political activist who  founded the Invaders with Cabbage and who would come to form his own  suspicions.
Across the street from Withers' studio, attorney H.T. Lockard ran a  law office. When Lockard became president of the Memphis branch of the  NAACP in 1955, a visitor started coming by - Bill Lawrence of the FBI.
In an interview for this story, Lockard, now a 90-year-old retired  judge, spoke for the first time about his three-year association with  Lawrence, a bespectacled G-man who came to Memphis in 1945 and ran the  bureau's local domestic intelligence operations in the 1950s and '60s.  In the '50s, as the Red scare was at its peak, the FBI kept close watch  on the NAACP and other civil rights organizations believed susceptible  to communist infiltration.
"Because of the nature of the work I was doing, there was a  suspicious feeling that I was either a communist or a communist  sympathizer, " Lockard said.
Like so many others recruited by the FBI, Lockard said agent Lawrence  showed up uninvited and made regular unannounced visits to his law  office with no evident purpose. "One stock question was how was I  getting along, '' he said.
Over a period, the agent asked if a certain suspected communist had  joined the local NAACP. Eventually, the man named by Lawrence applied  for membership. Lockard said he declined to enroll him.
It's unclear if the FBI considered Lockard an informant. He said he  was never paid. The FBI visits stopped in 1957, when Lockard left the  NAACP helm, yet he said he developed "an amiable camaraderie'' with  Lawrence that included exchanging Christmas cards for years after the  agent retired in 1970. Lawrence died in 1990.
Around the time Lawrence began calling on Lockard, Withers began his  long and remarkable career chronicling the civil rights movement.
In 1955, Withers covered the murder of Emmett Till, a 14-year-old  African American who was beaten, shot and tossed in a river in Money,  Miss., for whistling at a white woman.
The injustice of the crime - the defendants, both white, were  acquitted by an all-white jury yet later confessed in a paid magazine  interview - built the foundation of Withers' fame. Defying a judge's  order that banned picture-taking during the trial, Withers captured the  moment Till's great-uncle Mose Wright stood up at the witness stand and  pointed an accusing finger at the killers.
The Till case helped galvanize the movement, and Withers soon had a wide array of assignments covering civil rights.
As a freelancer for the Sengstacke family, publishers of the Chicago  Defender and the Tri-State Defender in Memphis, Withers covered many of  the seminal events of the era. He was beaten by police covering Medgar  Evers' 1963 funeral and harassed in small-town Mississippi following the  1964 murders of three Freedom Summer activists in Neshoba County. He  snapped pictures of King and Abernathy riding the first integrated bus  in Montgomery in 1956 and photographed King in 1966 casually reclining  in his room at the Lorraine where he would die two years later.
Trained in photography in the Army during World War II and equipped  with a bulky twin reflex camera, Withers lacked technical skill yet  managed to take profoundly powerful images, largely through his  resourcefulness and unusual access.
Locally, Withers chronicled all the significant events, the Tent City  voter registration drive in Fayette County, the desegregation of  Memphis City Schools and the Downtown sit-ins of 1960.
It was around then that the FBI's Lawrence began showing up at the  NAACP offices, recalls Maxine Smith, the organization's longtime  executive director in Memphis.
"We thought it was for our protection. We had nothing to hide, ''  Smith said. "Somewhere along the line we began to suspect'' differently,  she said.
What Smith and others didn't know was that by 1963 the FBI had begun  wiretapping King, initially because of the civil rights leader's ties to  adviser Stanley Levison, a suspected communist. The FBI tapped King's  phones, bugged his hotel rooms and, in one infamous episode, mailed  surreptitious audio recordings including a taped sexual liaison to his  Atlanta home along with a letter suggesting he commit suicide.
By 1967, as more-militant wings spun out of the movement, the FBI  launched a "ghetto informant program'' recruiting "listening posts''  within the black community, many of them white shopkeepers and  businessmen. Increasingly, headquarters pushed agents like Lawrence to  develop information from black leaders.
"He used to come out here a whole lot, right here, '' Smith said in  the living room of her South Parkway home. Smith told how Lawrence, a  music lover, fostered a relationship through her late husband Vasco  Smith's expansive jazz collection. 
When a 1981 book revealed the couple's relationship to the FBI, the Smiths sued - and lost. Still passionate about the issue, Smith argues she and her husband were never paid.
"Nobody has ever offered Vasco or me one penny. No one dare say that, '' she said.
Benjamin Hooks, the former national NAACP director, agreed with her assessment.
"I don't know if anyone is trying to say they were snitches. If  that's what they're saying that is a lie, " Hooks said in January, 11  weeks before he died. "You couldn't stop the FBI from coming and talking  to you. If you did, they'd make it up anyway. They were talking to  Maxine and Vasco and Hooks all the time.''
When details of the FBI's domestic spy program later leaked in  congressional hearings, officials said there were just five paid racial  informants working in Memphis in 1968. Officials have never disclosed  the identities of those informants; it's unknown if Withers was included  in that group.
"I'd like to know who those devils are, " Smith said.
Perhaps the last man with firsthand knowledge of Withers' covert  life, retired FBI agent Howell Lowe, opted to take his secrets to the  grave.
"I won't have my name connected with this, " Lowe told a reporter  last year, rejecting an interview for this story. He died Jan. 1 at age  83. Although Withers had died two years earlier, Lowe said he feared  that discussing the photographer's informant work might harm his  survivors.
"Some of the things we did were sleazy. We were fighting what we  thought was the possibility of uprising in this country, '' Lowe said.
Lost, too, to history are Withers' motives . A federal source who  first told a reporter about the photographer's secret life several years  ago said Withers, who raised eight children and struggled financially,  had a primary motive - money.
That same source said Withers' secret informant status came  dangerously close to exposure in 1978 when Congress re-examined the  FBI's investigation of King's assassination. At the time, revelations  about COINTELPRO and the FBI's treatment of King caused many Americans  to wonder if Hoover's hatred of the civil rights leader somehow morphed  into an assassination plot. The U.S. House Select Committee on  Assassinations eventually found the FBI had nothing to do with the  murder.
Yet, with the FBI's Memphis office on trial, Lowe's partner, agent  Lawrence, testified before the committee on Nov. 21, 1978, speaking of a  valued informant who "provided information on racial matters generally  and the Invaders in particular." The informant, paid up to $200 a month,  helped track King in the days before his murder.
Lawrence said he frequently gave his informant instructions ahead of  time, giving him names and topics to look out for and conferring almost  daily with him during the sanitation strike.
"I would call him if I had occasion to alert him to something, ''  Lawrence testified. "Otherwise, I would hope that he would call me,  which he frequently did. Then periodically we would meet in person under  what we hoped were safe conditions to personally exchange information,  go over descriptions, any photographs, things of that nature.''
Was Lawrence discussing Withers? The congressional record is unclear.  Nonetheless, as an FBI informant with a symbol number and a large  volume of assignments, Withers would have been handled in a similar  fashion, experts said.
"These are individuals who are going to be directed and paid... They  saw you as a valuable source and a continuing source, '' said Theoharis,  the retired Marquette professor.
Researchers who study the government informant system say patriotism,  desire to do police work, thrill-seeking and money often are motivating  factors. Withers had served in the Army in World War II. In addition to  serving briefly as a police officer, he ran successfully for Shelby  County constable in 1974 and later was appointed a gun-carrying agent of  the Tennessee Alcoholic Beverages Commission.
Withers' legal troubles also can't be discounted as a possible  motive. Withers would claim late in life he was set up in the 1951  kickback incident while working for MPD, yet his police personnel file  contains transcripts that reveal admissions by Withers and detailed  witness accounts supporting the allegations. He was fired but never  charged criminally.
Years later, in 1979, he faced similar charges, this time in federal  criminal court. Then-ABC agent Withers pleaded guilty to extorting  kickbacks from a nightclub owner.
Regardless of his motives, the revelation of Withers' FBI work doesn't harm his memory for some who knew him.
"It does not alter who he was a person, '' said ex-Invader Coby  Smith. "He did so many more things. That wasn't a fulltime thing to be  an informant for them.''
Rev. Lawson agreed. "It won't tarnish his memory for his family and friends.''