The video begins with three soldiers huddled around a naked detainee, his thin frame backed against a wall. With a snap of his wrist, one of the soldiers slaps the man across his left cheek so hard that the prisoner's knees buckle. Another detainee, handcuffed and on his back, is dragged across the prison floor.

Then, the human pyramid begins to take shape. Soldiers force hooded and naked prisoners into crouches on the floor, one by one, side by side, a soldier pointing to where the next ones should go. The grainy video stops. But there is more.