People who have contradicting behaviour and don't notice it... No I'm not talking about theists only, but people who insult others without looking at themselves first. People who complain about their neighbour being poor because of laziness and then they complain that their neighbour is a rich greedy bastard for having a ferrari, the kind of people who are not happy with anything
Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you