Does routinely arming the police cause a spiral of violence or is a deterrent to criminal behavior? In California, some people think it's the former. People have asked city council to disarm BART PD after an unarmed man was shot dead on a commuter train platform by a rapid-transit police officer. I don't think they're routinely armed here. However, in the case of the BART accident where police are seen putting Grant (victim) face-down on the ground (one of the officers kneels on Grant as another officer stands, tugs at his gun, unholsters it and fires a shot into Grant's back.), is it really an issue of him having a gun or just lack of training?