You never answered the question. You made a childish statement that “cops have to know where to draw the line,” but you yourself can’t even say where that line is.
OMG.. At the level death. Everyone is at all times subject to a higher law. Let’s speculate shall we? You and I meet someday and resume our verbal sparring. Once again you recognize that you are out of your league, so you push me. Big mistake. I take you down quickly and force your head against the ground whereupon you begin to cry like a little girl, “I can’t breathe! I can’t breathe!” I you die because I fail to use common sense, I go to prison. Cops are subject to the same common law values that we are. We ALL have to know where to draw the line.