https://www.cnbc.com/2017/08/16/facebook-internal-pro-trump-group-shut-down-says-report.html

An online group formed to discuss internal Facebook issues morphed into a pro-Trump forum that attracted hundreds of company workers before CEO Mark Zuckerberg shut it down, according to a report in Business Insider.

The anonymous group, called Facebook Anon, gave Facebook employees the chance to candidly complain about the company's policies and culture, the report says.