I can give you an example. There was what seemed to be to be an outlandishly strange interpretation of Queen's "Bohemian Rhapsody" included in the song's page. I joined a discussion in the comments (not in the page proper!) advocating removing it. Turns out, it was added by a wikiadmin and he liked the pseudo-intellectual veneer it added, so, rather than admit he's super-outvoted in the comments page, he accuses me of running sockpuppets (because, of course, there's no way multiple people could think he's wrong!). I had to write a responses defending myself. The "case" against me stalled for lack of evidence, but it was never officially dismissed and can be reopened. Since then, I've mostly stuck to typo-fixing, because, frankly, improving wikipedia isn't worth that sort of time and aggravation.