Place yourself in the other shoes as well. Everyone knows cops have guns and fire when threatened. What's going through your mind? A knife in your hand, guns pointed at you. At that point, moving closer is the dumbest move, yet they still move in... That kind of mentality needs to be taking the blame. Make a choice, deal with the consequences.

I saw an incident come out of Chicago recently. Two cops in a park, they approach a man after getting a call to check it out. He pulls a knife and the young lady cop was one the receiving end of a few stiff jabs to the belly. And honestly, I think the cops hesitated because of these politics. All it takes is a split second. Even in a fist fight, most people with experience know waiting around for the other to throw the first shot is how you get your ass beat.