Mississippi Burning (1988) Gene Hackman, Willem Dafoe

In 1964, three civil rights workers from the North disappear in a small Mississippi town and the FBI are sent to investigate. Agent in charge Alan Ward does everything by the book. Agent Rupert Anderson however was a Sheriff in Mississippi before joining the FBI and understands the local culture. He's also prepared to bend the rules a bit if it will help in the investigation. They focus on the Sheriff's office and Deputy Clinton Pell in particular as they think he may be the weakest link in the conspiracy. As the investigation intensifies however, the KKK launch a series of attacks against the local African-American population. With no one on either side prepared to talk, Ward agrees to Anderson using his own unorthodox methods to learn what happened that night and who killed the three men.

Won Oscar.