In this policy brief, ARTICLE 19 addresses the compliance of dominant social media platforms – Facebook, Twitter, and YouTube (owned by Google) – with international freedom of expression standards; and offers some practical recommendations as to the steps companies should take in order to demonstrate their commitment to the protection of freedom of expression.

Source

https://www.article19.org/wp-content/uploads/2018/06/Regulating-speech-by-contract-WEB-v2.pdf