http://thefreethoughtproject.com/year-identified-cop-killers-cops/

http://thefreethoughtproject.com/suicidal-cop-shot-cop-force-feared-safety/

http://thefreethoughtproject.com/undercover-albuquerque-police-officer-shot-fellow-cop/

http://wreg.com/2015/01/21/mississippi-gaming-officer-shot-in-tunica/

http://www.killedbypolice.net/