Good people do not have the luxury of burying their heads in the sand! – evil people, like the Nazis, like the terrorists, like the Arabs, need we continue, are actively seeking out good people! (from jealousy, which causes hatred – a desire to annihilate) The only moral thing to do, is, as the Bible states, when there is a clear and present danger, shoot first! for otherwise, you are party to culpable-homicide