There was a somber silence in the Cannon Caucus Room. Images of violence—hundreds of Americans attacking fellow Americans in vicious hand-to-hand combat—played on the giant video screen. The House committee investigating the January 6 insurrectionist riot, during its first primetime hearing on Thursday night, was showing footage of the brutal assault. Some of it was new, never-before-seen video, and much of it was familiar—especially to the people in the room: the nine members of the committee, a dozen or so House members in the audience, scores of journalists and committee staffers, and Capitol Police officers. Yet watching these scenes once more—Donald Trump’s brownshirts pummeling cops who were valiantly trying to protect the citadel of American democracy—and doing so in the Capitol complex where the raid occurred, with people who had been there that day and targeted by the savage mob, was a profoundly sad experience.