"Preservation of one's own culture," Cesar Chavez once said, "does not require contempt or disrespect for other cultures." For too long, we in America did not live by this golden rule. The official histories of our nation tended to exclude more people than they kept in. At the National Trust for Historic Preservation, we are working to remedy this deficit, and to engage with Americans from all backgrounds to help save and revitalize diverse places that matter.