Like I said brother, simple concepts like perception and context seem to be beyond you so stop trying to wrap your head around it you'll only hurt yourself. But I'll try one last time: One that considers themselves good often consider all opposition to be evil - this is not the case - look at the Germans and the Crusaders. They thought they were good and defined their enemies as evil but this was merely their perception and it came from their context at the time, but we know this is not the case. Just as we know that all those we consider evil's opponents are not necessarily good - look at the Soviets; they fought the Germans but a hell of a lot of their actions could be considered evil.