In the minds of too many LEO's, all citizens are threats and can be shot at any time for any reason. This rogue behavior is bound to grow because Police leadership, unions, and prosecutors condone and protect this sort of criminal behavior.
Can you imagine the carnage if normal civilians were allowed to shoot with as little repercussion as a cop? For most of us, a shooting would be judged on if a reasonable person would conclude he was, indeed, in danger of death or severe injury.
With cops, the standard seems to be, “Were voices raised? Was the cop stressed?”