You can make yourself feel better about yourself if you project your shadow side, if you project your own potential for evil onto someone else. By annihilating them and, therefore, your shadow, you bring yourself into some state of purity or reformation.
“I try and eat good. On the road, that's next to impossible. And we eat a lot of unhealthy things when we're in Texas - that's what you do there.”
“If every inhabitant of a liberal democracy believes in liberal democracy, then it doesn't matter what creed or colour they are.”