Are Facebook and YouTube Quasi-Governmental Actors?
The Economist

“You will not post anything libelous, defamatory, harmful, threatening, harassing, abusive, invasive of another’s privacy, hateful, racially or ethnically objectionable, or otherwise illegal.
You will not make threats to other users or people not associated with the site.
If you violate these rules, your posts and/or user name will be deleted.
Remember: you are a guest here. It is not censorship if you violate the rules and your post is deleted. All civilizations have rules and if you violate them you can expect to be ostracized from the tribe.”