This is exactly what made me uneasy, too. (Don't worry about the voting; it's the discussion I am interested in in this case ;) ).
So the question is: What moral standards does literature (or, more generally, art) need to uphold? Is it acceptable for the "villain" to win in a novel? Is it acceptable for a painting to show rape without the painter making his opposition to it clear? And if not, how does s/he need to make it clear?

I feel two gut instincts running against each other: an instinct for completely free expression, and an instinct for suppressing writing that describes the unacceptable in a neutral-ish way.

How do you feel about that?