Leaked documents show how police used social media and private Slack channels to track George Floyd protesters from r/technology
Police monitored RSVP lists on Facebook events, shared information about Slack channels protesters were using, and cited protesters’ posts in encrypted messaging apps like Telegram.
How police used social media to track protesters
warning sent to police departments on June 6, the FBI says it’s been tracking “individuals using Facebook, Snapchat, and Instagram” who post about organizing protests.
more on surveillance in this IMS blog