https://www.aljazeera.com/news/2018/03/facebook-role-rohingy...
https://www.nytimes.com/2018/03/19/technology/facebook-cambr...
https://www.nytimes.com/2014/06/30/technology/facebook-tinke...
https://www.theatlantic.com/technology/archive/2017/10/what-...
Some of these are direct actions by the company. Some are unintended consequences. And this isn't even getting into the personal harm and unhealthy behavior that comes from use of Facebook and similar manipulative social media.