We have seen a great deal of civil unrest in America over the past many months, much of it peaceful. But the deadly siege that took place at the U.S. Capitol yesterday was different—both in motivation and response. The audacity of the rioters and the violence they perpetrated should have no place in the political process, although tragically, and all too often, violence finds its home in the United States. Yesterday's shameful events stem from complex issues, including the accelerating violation of norms, racism, and growing distrust in institutions and the other trends that make up Truth Decay, the diminishing...