Biden is extolling “tolerance and humility” and “standing in the other person’s shoes” as a way of ending the county’s “uncivil war.” As political scientists like Lilliana Mason and Nathan Kalmoe have documented, this is not going to be easy for some people to do. A significant chunk of Americans (around 15 – 20 percent) think violence against the other party is at least sometimes justified. Dehumanization, too, is an increasingly prevalent feature of American partisanship, as FiveThirtyEight contributor Erin Cassese has found. Grappling with those dark realities is going to be one of the biggest challenges of Biden’s presidency.
