Since opening its doors in 2016, theNational Museum of African American History and Culturehas been one of the hottest tickets in Washington. We take a tour of the new exhibition“Watching Oprah: The Oprah Winfrey Show and American Culture”with its curator. And later in the hour, we cross the National Mall for a trip to theNational Museum of the American Indianand a tour of“Americans,”an exhibition that looks at how American Indians are portrayed in popular culture.