The deepest darkest secret of evil which Freud understood, which the Jewish sages understood, is that because by Nature we have jealousy, so when our self-image is destroyed, and we feel jealous of those who we see as having dignity, therefore our need, exactly as Hitler, exactly as the current mainly Arab / Muslim anti-semites, who have done a terrific job at inducing this type of hate to otherwise non-malicious normal people, as Hitler did