William O'Neal (informant)

O'Neal and his betrayal of Hampton is explored in the film Judas and the Black Messiah (2021), where he is portrayed by LaKeith Stanfield. For their performances, both Stanfield and Daniel Kaluuya (who played Hampton) were nominated for the Academy Award for Best Supporting Actor, which Kaluuya won.

After his role was revealed in 1973, O'Neal was relocated to California under the Federal Witness Protection Program and given a new identity. In 1984, he secretly returned to Chicago. He was interviewed in 1989 about his informancy, for the second part of the documentary series Eyes on the Prize. The night the first episode aired, January 15, 1990, O'Neal committed suicide. His own episode was broadcast on February 19, 1990.

In the early hours of January 15, 1990, after visiting with his uncle Ben Heard, O'Neal ran out of the apartment and into traffic on Interstate 290, where he was hit by a car, and killed; he was 40 years old. His death was ruled a suicide, though his wife said that it was accidental. Earlier in the evening, O'Neal had been drinking and attempted to jump out a second-story window, but Heard pulled him back inside. Heard said afterward that O'Neal had "cooperated with the FBI to reduce his own potential jail time, then got in way over his head and was forever tortured by the guilt", and that "he never thought it would come to all this." He said O'Neal had previously run out onto Interstate 290 in September 1989 and that he was hit by a vehicle and hospitalized.

The episode featuring O'Neal's interview, "A Nation of Law? (1968–71)", was broadcast on February 19, 1990.

On April 13, 1989, O'Neal was interviewed for the PBS documentary Eyes on the Prize II, about the civil rights movement in the 1960s. In the extensive interview, he described being recruited by the FBI to become an informant and provide information about Fred Hampton, chairman of the Chicago Black Panther Party. He gave details about his impressions and experiences working in the Black Panther Party, his relationship with FBI agent Roy Mitchell, and his feelings about his activities and his role. He denied having drugged Hampton the night before he was assassinated. O'Neal said, "I had no allegiance to the Panthers."

O'Neal's involvement in the raid was revealed in 1973, and he was relocated to California under the alias of William Hart via the Federal Witness Protection Program. He secretly returned to Chicago in 1984.

At 4:00 a.m., a 14-man armed Chicago police team arrived at the apartment, and at 4:45 a.m. stormed inside. They first shot and killed Mark Clark, sitting in the front room of the apartment with a shotgun in his lap on security duty. The police cleared out the people from the rest of the apartment, wounding several others, and went to Hampton's bedroom. Witnesses said that they heard two bangs, presumably the close-range shots to the back of Hampton's head that killed him. In January 1970, a coroner's jury held an inquest. They ruled that the deaths of Hampton and Clark were justifiable homicide by the police. The ballistics investigation of the raid found that the Chicago police fired as many as 99 shots, but only one shot was fired by the Panthers, and it hit the ceiling.

In 1969 Hampton was working on the Rainbow Coalition, an alliance among gangs and minority groups in Chicago, and the FBI and police became increasingly concerned about his activities and growing political power. That summer, the police raided Panther offices, arrested several members, and burned the building down. The FBI required O'Neal to give them a drawing to show the layout of Hampton's apartment on Monroe Street in the West Side, where the Panthers often gathered, so they could prepare a raid.

On the evening of December 3, 1969, Hampton taught a political education class at a local church, attended by most Panther members. Afterward, he and several Panthers went to his apartment, and around midnight they ate a dinner prepared by O'Neal. O'Neal slipped secobarbitol into Hampton's drink so he would not wake up during the police raid. O'Neal left, and at about 1:30 a.m. Hampton fell asleep while talking to his mother on the telephone.

In 1968 the FBI offered him a deal: in exchange for having his felony charges dropped and receiving a monthly stipend, O'Neal agreed to infiltrate the Panthers as a counterintelligence operative, or informant. The FBI had been conducting their illegal COINTELPRO operation since the mid-1950s, expanding their efforts against communists to include black civil rights activists. By 1966 they were attempting to infiltrate and undermine black nationalist movements such the Black Panthers and discredit black civil rights leaders. The targeting of the Black Panther Party was heightened due to its adherence to Marxism-Leninism.

William O'Neal was born and grew up in Chicago, and had gotten into trouble with the law as a teenager. In 1967, when he was about 18 years old, he was caught by FBI agent Roy Martin Mitchell, who had tracked O'Neal down for stealing a car and driving it across state lines to Michigan.

William O'Neal (April 9, 1949 – January 15, 1990) was an American FBI informant in Chicago, Illinois, where he infiltrated the local Black Panther Party (BPP). He is known for being the catalyst of the 1969 police/FBI assassination of Fred Hampton, head of the Illinois BPP.