How are Americans reflecting on their 250th anniversary?

This 4th July marks a big milestone in U.S. history, with 250th anniversary celebrations taking place across the country. But with political division high in much of America, how are people marking this anniversary and reflecting on their nation's history? We talk to Beverly Gage, a history professor at Yale University, and author of "This Land is Our Land: A Road Trip through U.S. History."