The hate they create... The exploiters, manipulators and control freaks exploit people's better (and worse) natures. A vast majority of people can be our good neighbors save the aforementioned exploiters/manipulators/control freaks. And without creating bogeymen and getting people angry, outraged and full of hate and judgement and grievance the extreme minority of exploiters would have no voice or power, but sadly, they have power over almost half the people. Punch a Nazi and all, just got to make everyone out to be a Nazi.