Federal law enforcement in Washington, D.C., has been closely monitoring social media for signs of potential violence and extremist activity ahead of a widely publicized demonstration against vaccine mandates this weekend, according to documents obtained by Yahoo News. Earlier this week, Defeat the Mandates issued a press release stating that over 6,000 federal workers were planning to join the march, along with firefighters and other first responders who oppose vaccine mandates. (Susan Walsh/AP)The Defeat the Mandates march is not the only potentially volatile high-profile event happening in Washington this weekend. “We are worried that with the new vaccine mandate there is potential for violence or conflict,” a senior law enforcement official told Yahoo News. Law enforcement would be responsible to consider its possibility and be prepared to respond in the event it manifests.”