Attack on Terror: The FBI vs. the Ku Klux Klan (1975)

This excellent fact-based film is a dramatization of the murders of three civil rights workers in Mississippi in 1964. The FBI, personified herein by southern operative Wayne Rogers, is brought in to investigate the trio's disappearance. Upon the discovery of the bodies on August 2, 1964, the feds follow a trail of (admittedly skimpy) evidence which leads to the local chapter of the Ku Klux Klan, headed by the virulent Glen Tuttle (Rip Torn). The film was based on the book by Don Whitehead.

Wayne Rogers, Ned Beatty, Peter Strauss, Dabney Coleman, Marlyn Mason, Rip Torn, Ed Flanders, Andrew Duggan, John Beck, Geoffrey Lewis, Virginia Gregg, Mills Watson.