I find the behavior of moderators on Reddit far more enraging than any content that gets boiled up. It's like the mods of /r/politics and other similar default subs are there to cause political friction and rage by being openly and aggressively partisan to a very particular slice of the political spectrum. I say this as someone well to the left of the zeitgeist on those subs, but you'll of course hear the same thing from people to the right of them.