Black Like Me is a movie and a book about a white man who undergoes a surgery to become black to understand what it is like to experience racism in America.
To Kill a Mockingbird is a classic book/film that deals with a controversial court case of a black man falsely accused of sexual assault. It is told through the perspective of young Scout.
The long walk home is set in the civil rights movement, but more specifically the bus boycott. I love this movie.