https://www.theguardian.com/technology/2020/aug/28/facebook-militia-posts-kenosha-protests

Facebook CEO points to ‘operational mistake’ by teams meant to bar organizations deemed dangerous

Mark Zuckerberg blamed an “operational mistake” by contractors for Facebook’s failure to remove the “call to arms” of a Kenosha, Wisconsin, militia prior to the shooting Tuesday night that left two people dead and another injured.