“In the last ten years only two incidents resulted in criminal prosecution of police for killing citizens.”
I don’t know where you get your “facts”, but it’s not true. I can think of this one off the top of my head because it’s local. They even made a movie about it. You can argue that involuntary manslaughter and two years in county jail was too light, but it debunks your claim. I suspect it’s not the only one.
BART Police shooting of Oscar Grant
http://en.wikipedia.org/wiki/BART_Police_shooting_of_Oscar_Grant
WOW three incidents instead of two. Really “debunks” my premise that police get away with murder literally. NOT