The only possible way this scales is if they run on a report-based system. Result: A group of mildly-dedicated trolls can pull anything they want from Facebook

The only possible way this scales is if they run on a report-based system. Result: A group of mildly-dedicated trolls can pull anything they want from Facebook and Twitter by bombing them with flags. These events are miniscule in the grand scheme of millions of posts per day the sites get, so nothing will ever be done about the abuse, leaving those that complain to look like a loud, perpetually-dissatisifed minority. Hate Speech is now the Worst Thing Ever® on the internet, so Facebook and Twitter now get to claim "Look! We did something! Witness us!"