The FBI had manipulated the digital tapes slightly; the faces of the individual police officers were obscured, and the federal agency had muted the sound. But the images were startlingly clear.

There was, for example, the image of a Mesquite police officer standing with his foot on Graham’s head.

There was the image of Graham in the backseat of the police cruiser, his hands and feet bound — yet also unseatbelted or otherwise restricted — in obvious distress, hurling himself about the car. And then the ghostly image of a police officer’s hand with a Taser stun gun appearing in the camera frame, shocking Graham on the leg.

And then, pushing him on his back and shocking him again — this time directly, and apparently deliberately, in his testicles. And Graham screaming silently as the electric shock to his genitals appeared to be repeated.