 Four Missouri prison guards have been charged with murder and a fifth with accessory to involuntary manslaughter in the December death of a black man who was pepper sprayed, had his face covered with a mask, and was left in a position that caused him to suffocate while in custody at a correctional facility. The complaint filed Friday charges Justin Leggins, Jacob Case, Aaron Brown, and Gregory Varner, each with one count of second-degree murder and with one count of being an accessory to second-degree assault.