<human>: Condense the text into a few key points

With the recent nonsense in the Samuel L Jackson thread in /r/movies, I thought this might be a good topic to bring up. I've seen it in a number of major subreddits, and I'm interested into the reasons why this happens. Widespread censorship, horribly unpopular theme changes (/r/thewalkingdead, looking at you) - I'm extremely curious as to how these decisions are made behind the scenes. 

I think that would give me a much better understanding of the whole thing. While I hate to use this analogy, is reddit turning essentially into a 99% vs 1% situation, where a "segmented" portion of a virtual society is that far removed from what the general user-base actually wants? I'm not so pretentious as to assume this is a "power corrupts" thing, but I'm really struggling to fully understand what makes this kind of behavior so commonplace between mods of subreddits, large and small, despite the general disdain for it.
<bot>: To me, reddit should require very little moderation or maintenance, for the most part. It's got a system designed to handle this. It's primarily for this reason that it baffles me that this comes up so frequently.