It's been 20 years since Atlanta became an Olympic city. The city transformed after that moment. We spend the hour on how the 1996 Olympics changed Atlanta and hear stories from listeners about their Olympic memories. We speak with former NPR correspondent Kathy Lohr, who covered the games for the network, and Maurice Hobson, an assistant professor of African American Studies at Georgia State University and the author of the forthcoming book, "The Legend of the Black Mecca: Myth, Maxim, and the