So along with the additional deflection you say you're quitting because you don't have an actual legal nor rational argument? Got it.

And, so far as the -morality- of use of lethal force in self-defense goes, you'll note that the statutory justifications and criteria for use of lethal force in self-defense in the US (which are the same for both LEO and "civilian") evolved from the Common Law, which evolved from the Judeo/Christian tradition which Islam shares, which further evolved from prior "pagan" cultures, which so uniformly shared the same precepts among moral and faith traditions the world over that the few, arguable "exceptions" history provides actually prove the rule. 

Which is why access to the most effective means of self-defense for individual persons, means not reliant on physical prowess, size, nor (dis)ability, the means currently best represented by firearms, is a fundamental human and civil right.