[https://m.dw.com/en/neo-nazi-attack-survivors-create-tool-to-track-racist-extremists/a-55959989](https://m.dw.com/en/neo-nazi-attack-survivors-create-tool-to-track-racist-extremists/a-55959989) >"Survivors of Germany's Halle synagogue attack are now tracking white supremacist extremists worldwide. Terrorists use online platforms like Twitch, which police are failing to monitor, they say."