Online hate under scrutiny after Buffalo shooter streamed massacre on Twitch

Analysis: Call for social media firms to be held accountable for violent racist views spreading like a virus'

The Buffalo shooting has focused attention on the role of Twitch, the gaming platform used by the gunman to broadcast a live stream of the massacre, amid renewed calls for tighter regulation of social media platforms.

Twitch allows creators, many with millions of followers, to stream themselves playing video games, chatting with fans, or simply going about their daily lives.