Facebook now OK with beheading videos, but nudity stays verboten

It's easy to make a mountain out of Facebook's explicit OK to posting videos of people being beheaded. Tabloids see such lowest-common-denominator topical material as a threat to their own product, and their outrage seeks to impose their own limitations upon the competition. But it's also true that Facebook still bans nudity and other sexual content. As the matter is therefore one of editorial judgment, rather than protecting users' free speech, what does Facebook's editorial judgment say about its audience?