This image from video from the Justice Department contained in the sentencing memorandum, and annotated by the source, shows David Nicholas Dempsey stomping on police officers in the Lower West Terrace Tunnel at the U.S. Capitol on Jan. 6, 2021, in Washington. Dempsey, a California man with a history of political violence, was sentenced on Aug. 9, 2024, to 20 years in prison for repeatedly attacking police with flagpoles and other makeshift weapons during the riot at the U.S. Capitol. (Justice Department via AP)

This image from video from the Justice Department contained in the sentencing memorandum, and annotated by the source, shows David Nicholas Dempsey throwing a pole at a police officer in the Lower West Terrace Tunnel at the U.S. Capitol on Jan. 6, 2021, in Washington. Dempsey, a California man with a history of political violence, was sentenced on Aug. 9, 2024, to 20 years in prison for repeatedly attacking police with flagpoles and other makeshift weapons during the riot at the U.S. Capitol. (Justice Department via AP)

FILE - Rioters loyal to President Donald Trump rally at the U.S. Capitol in Washington, Jan. 6, 2021. (AP Photo/Jose Luis Magana, File)