https://www.theguardian.com/us-news/2019/mar/29/facebook-new-zealand-christchurch-attack-response

After two weeks of criticism, Sheryl Sandberg published a letter saying the company is exploring live stream video restrictions

Two weeks after a terrorist used Facebook to broadcast live video while he massacred 50 Muslim worshippers in New Zealand, the company has broken its silence in the country by publishing a letter from Sheryl Sandberg in the New Zealand Herald.