**Some listeners may find parts of this programme upsetting** Emmett Till, fourteen and black, was put on the train from Chicago by his mother Mamie in August 1955. She got his corpse back, mutilated and stinking. Emmett had been beaten, shot and dumped in the Tallahatchie River for supposedly whistling at a white woman. His killers would forever escape justice. What Mamie did next helped galvanise the Civil Rights Movement and make Emmett the sacrificial lamb of the movement.