Moral Dilemma

How true is it that humans are the planet's most noble creatures and its most savage. Are we, the altruistic like Gandhi, Mother Teresa and Martin Luther King Jr or the atrocious like Stalin, Hitler and Pol Pot? Moral judgment is relatively consistent from person to person. However, moral behavior is scattered all over. The rules we know, even the one we intuitively feel, are by no means the rules we always follow. The brain works harder when the threat gets more complicated.