https://techcrunch.com/2019/03/14/slack-hate-groups/

Today in a short blog post, Slack announced that it had removed 28 accounts with a “clear affiliation with known hate groups.” Few details were provided about the accounts or how Slack identified them, but we have reached out to the company for more information.

The announcement, brief as it is, comes as a surprise. To date, Slack has managed to stay out of the conversation around what happens when sometimes violent politically extreme organizations use popular social platforms to organize. While that conversation should be fairly clear cut when it comes to public-facing content somewhere like Facebook, it’s a bit more nuanced on messaging platforms where communication is private in nature.