Why are ideologies dangerous?

There are no innocuous ideologies. They're forms of pathological over simplification and they're also clubs, I mean the kind of clubs that you hit people with as well as the kind that you belong to... the advantage (to me) of being an ideologue is that I can explain everything, I can feel morally superior, and I know who my enemies are...and you know what you're supposed to do with enemies? They're not your friends, you move against them.