Rioters scaling the United States Capitol, marching with Confederate flags and riot gear. Lawmakers scurrying off the floor of the Senate, ducking for safety. Capitol Police officers standing near a barricaded door with guns drawn, guarding the House chamber. These are among the stunning images from a historic day on which a mob of people loyal to President Trump broke into the Capitol to try to prevent lawmakers from certifying the Electoral College count to confirm President-elect Joseph R. Biden Jr.’s victory. Above, rioters incited by President Donald Trump storm the Capitol building in Washington, Jan. 6, 2021.