Framed for Murder by the FBI

The murder of Edward Deegan resulted in one of the most disturbing examples of wrongful convictions in American legal history.
Joseph "The Animal" Barboza, a notorious hitman falsely implicated Joseph Salvati, Peter Limone, Henry Tameleo, and Louis Greco in the murder he had committed. The FBI knew the truth but covered it up to protect Barboza, who was an FBI informant.