Trial (1955)
Trial is a 1955 American film directed by Mark Robson and written by Don Mankiewicz (novel and script). It stars Glenn Ford, Dorothy McGuire, Arthur Kennedy and Juano Hernandez. It is about a Mexican boy accused of rape and murder; originally victimized by prejudiced accusers, he becomes a pawn of his communist defender, whose propaganda purposes would be best served by a verdict of guilty.
More at Wikipedia.