WASHINGTON —
A California man with a history of political violence was sentenced on Friday to 20 years in prison for repeatedly attacking police with flagpoles and other makeshift weapons during the Jan. 6, 2021, riot at the U.S. Capitol.
David Nicholas Dempsey’s sentence is one of the longest among hundreds of Capitol riot prosecutions. Prosecutors described him as one of the most violent members of the mob of Donald Trump supporters that attacked the Capitol as lawmakers met to certify Joe Biden’s 2020 presidential election victory.
Dempsey, who is from Van Nuys, stomped on police officers’ heads. He swung poles at officers defending a tunnel, struck an officer in the head with a metal crutch and attacked police with pepper spray and broken pieces of furniture, prosecutors said.
He climbed atop other rioters, using them like “human scaffolding” to reach officers guarding a tunnel entrance. He injured at least two police officers, prosecutors said.
“Your conduct on January 6th was exceptionally egregious,” U.S. District Judge Royce Lamberth told Dempsey. “You did not get carried away in the moment.”
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