Question: For Us the Living: The Medgar Evers Story is a film based on a book by William Peters and an American civil rights activist who was the chairwoman of what?
Sentence (from "Ghosts of Mississippi"): The plot is based on the true story of the 1994 trial of Byron De La Beckwith, the white supremacist accused of the 1963 assassination of civil rights activist Medgar Evers.
Relevant evidence: No