and significant number seen crimes committed on facebook. warning, some of this is tough to watch. reporter: june last year in chicago. antonio perkins on facebook live drinking tequila, last thing he does before he s shot dead. perkins falls to the ground. camera does too but keeps recording. oh, my god. oh, my god. police look into whether perkin s killer used facebook live to pinpoint his location but a suspect is never identified. in norfolk, virginia, a month after that, three men hanging out in car singing along with music. all streaming with facebook live, music interrupted by gun fire, the camera falls but keeps