For individuals to feel justified in doing horrible things to other people, they must feel an unwavering certainty in their own righteousness, in their own beliefs and deservedness. Racists do racist things because they’re certain about their genetic superiority. Religious fanatics blow themselves up and murder dozens of people because they’re certain of their place in heaven as martyrs. Men rape and abuse women out of their certainty that they’re entitled to women’s bodies. Evil people never believe that they are evil; rather, they believe that everyone else is evil.
