There is "burning down buildings" pr0n. Every summer, there's no shortage of blockbuster movies about things blowing up. Sometimes they show the same explosion from different angles, all in a row. Boom! These movies usually do well outside the US, and they say it's because nobody's paying attention to the dialogue, so nothing gets lost in translation.

And now there's horror porn, too. Does Hostel Part 2 have any redeeming qualities apart from how you get to see a lot of teenagers tortured to death? Those movies make all sorts of money.

Therefore, comics about people doing horrible perverted sexual things should be no different, i.e. allowed.