LBS;
No, not outside of the forum rules, it doesn't. If sites are to become sheltered communities then they should state as much. If the membership of the site is fundamentally decent then that will serve to protect it from indecencies, not synthetic moralities imposed from on high and enforced by individuals who are themselves prone to bias and blunder.

You can pull your 'censorship wagons' in a circle if you like, and allow the forces of extremism to ride around outside, left and right, but you'll start eating each other not long after debate fizzles out.