Former U.S. Capitol Police officer Harry Dunn, who testified before the House select committee investigating the Jan. 6, 2021, Capitol attack, announced Friday that he’s running for Congress. Dunn is running for Maryland’s 3rd Congressional District, which is being vacated by retiring Rep. John Sarbanes (D) — a move that comes several months after suggesting on X, the platform formerly known as Twitter, that he might run for the district. Dunn became a household name in 2021 when he testified before lawmakers about the Capitol riot, recounting how he had seen Capitol Police and Metropolitan Police Department officers being attacked...