Judas and the Black Messiah (Warner Bros., 2021) is a biographical drama film about American Black Panther Party activist Fred Hampton (Daniel Kaluuya) and how FBI informant William O’Neal (Lakeith Stanfield) inadvertently aided in the murder of Hampton. Directed and produced by Shaka King, from a screenplay by King and Will Berson, and a story by King, Berson, and Kenny and Keith Lucas. Costarring Jesse Plemons, Dominique Fishback, Ashton Sanders, Algee Smith and Martin Sheen.

From a 1.25.90 Chicago Reader piece by Michael Ervin titled “The Last Hours of William O’Neal“. The subhead reads, “He was the informant who gave the FBI the floor plan of Fred Hampton’s apartment. Last week he ran onto the Eisenhower Expressway and killed himself.”