https://www.siliconvalley.com/2019/05/14/facebook-restricts-live-feature-citing-new-zealand-shooting/

SAN FRANCISCO – Facebook Inc said on Tuesday it was tightening rules around its livestreaming feature ahead of a meeting of world leaders aimed at curbing online violence in the aftermath of a massacre in New Zealand.

A lone gunman killed 51 people at two mosques in the city of Christchurch on March 15 while livestreaming the attacks on Facebook. It was New Zealand’s worst peacetime shooting and spurred calls for tech companies to do more to combat extremism on their services.