At 2:12 p.m. on Jan. 6, supporters of President Trump began climbing through a window they had smashed on the northwest side of the U.S. Capitol. “Go! Go! Go!” someone shouted as the rioters, some in military gear, streamed in. It was the start of the most serious attack on the Capitol since the War of 1812. The mob coursed through the building, enraged that Congress was preparing to make Trump’s electoral defeat official. “Drag them out! … Hang them out!” rioters yelled at one point, as they gathered near the House chamber.