U.S. Capitol Police Officer Harry Dunn listens to testimony during the opening hearing of the U.S. House (Select) Committee investigating the attack on Capitol Hill in Washington, July 27, 2021. Four officers told lawmakers they were beaten, taunted with racial insults, heard threats including "kill him with his own gun" and thought they might die as they struggled to defend the U.S. Capitol on Jan. 6 against a mob of then-President Donald Trump's supporters.