Online threats and security measures increase ahead of Trump's indictment hearing.

Law enforcement agencies and extremism researchers are closely monitoring online threats and escalating rhetoric surrounding Donald Trump’s arraignment as the former president formally faces federal criminal charges in a sweeping indictment connected to his possession of classified documents at his Mar-a-Lago property. Trump's supporters have declared "war" and suggested that protests could make "Waco look like a tea party." Authorities will be closely monitoring both events. At least one person convicted for their roles in connection with the attack on the Capitol will join the protests. Law enforcement are aware of the messages, according to an advisory viewed by The Washington Post.