History provides a sense of where we've been and lessons that can be taken forward.

Civility is not about dousing strongly held views. It's about making sure that people are willing to respect other perspectives.

History provides a sense of where we've been and lessons that can be taken forward.

The majority of U.S. high school students don't know within 50 years when the Civil War occurred.

There are words bandied about that are being misused - words like 'socialism,' words like 'communism,' words like 'fascism.

Civility is not simply about manners.

I think America is going to have to think through whether it wants to uplift the political dialogue or advance an approach that divides and, frankly, can lead to violence.