The suspected gunman in the Yom Kippur synagogue attack in Halle, Germany, broadcast his rampage on the livestreaming platform Twitch...

About 35 minutes of video was broadcast live on Twitch, an Amazon-owned platform that is primarily used by video game players, the company confirmed Wednesday. Twitch removed the video but copies had already been downloaded and shared elsewhere on the internet, highlighting the challenges faced by platforms attempting to stymy the dissemination of such material...

The Halle attack is the second livestreamed rightwing extremist attack this year, following the March massacre of 51 Muslim worshippers in Christchurch, New Zealand, which was broadcast on Facebook Live...

“This video was not surfaced in any recommendations or directories,” the company said in a statement posted on Twitter. “Instead, our investigation suggests that people were coordinating and sharing the video via other online messaging services.” ...

Becca Lewis, a research affiliate at Data & Society who studies online political subcultures, [said] tech companies should work to limit the reach of such videos...