Discord says it had taken down 2,212 extremist and violent communities from its platform, about 1,500 were first detected by the company, from July to Dec. 2020 (Bobby Allyn/NPR)

Bobby Allyn / NPR:
Discord says it had taken down 2,212 extremist and violent communities from its platform, about 1,500 were first detected by the company, from July to Dec. 2020  —  Discord, the group-chat app that has grown rapidly during the coronavirus pandemic, removed more than 2,000 communities dedicated …