Q
That's the real dilemma. We don't much like that editor ourselves and we do like Michael Moore, enough of us anyway to over-ride our policy regarding harassment of users. Neutral point of view has nothing to do with it. NPOV has to do with the content of the article, not a link to a site which was harassing a Wikipedia user by inviting vandalism of his talk page.
Fred, I do wish you'd stop saying this. I at least can't stand Michael Moore and think he's is an idiot, a liar and does sloppy research. That isn't changing my opinion on whether he should be linked to or not. The notion that this is being done out of some sympathy for Moore or his politics is simply not true.