The user Bill Dubuque posted a great answer to a question I asked, but it got two downvotes, despite it clearly answering my question (I accepted the answer) and it is clearly a well constructed answer. I asked Bill in the comments why it got downvoted, and he said "The politics of the site is - and always has been - very ugly." So perhaps my question is about what he means by this.
Well, this is my take: Targeted downvoting is unfortunately, real and not so uncommon here. By "targeted downvoting" I mean pinning a downvote on a post, not due to the quality of the post itself, but instead due to a grudge towards the user who wrote the post. This could be due to a bunch of reasons. My understanding is that this is something that happens to moderators and site administrators here far too often, as their actions are far more visible.