Remember Christopher Dorner, the former LAPD officer who killed other officers after he was fired? He was fired for "making false statements" about his immediate supervisor. Those supposedly "false statements" were to report that his supervisor kicked a mentally ill man after he had been handcuffed. I am not justifying Dorner's shooting spree, but pointing out an example of the failure of the supervision system. Dorner was not fired for his violent tendencies - quite the opposite. He was fired for crossing the Blue Line and testifying against his supervisor.

https://web.archive.org/web/20130211010745/http://wap.myfoxla.com/w/main/story/84473837/?sp=1