https://www.techdirt.com/articles/20201023/15352345567/content-moderation-case-studies-facebook-removes-militia-event-following-shooting-august-2020.shtml

Summary: Following the shooting of Black man Jacob Blake by Kenosha police officers, protests erupted in the Wisconsin town.

As law enforcement attempted to rein in the damage, citizens aligning themselves with private "militias" discussed taking action during the civil unrest.