High Quality Content by WIKIPEDIA articles! The Soledad Brothers were three African American inmates charged with the murder of white prison guard John V. Mills at California's Soledad Prison on January 16, 1970.George Jackson, Fleeta Drumgo and John Clutchette were said to have murdered Mills in retaliation for the shooting deaths of three black prisoners during a prison fight in the exercise yard three days prior by another guard, Opie G. Miller.