Arne Duncan, who stepped down as U.S. Secretary of Education at the start of this year, chats with David about his childhood in Hyde Park, his tenure as a member of the president's cabinet, and the gun violence and education problems facing the city of Chicago.To learn more about how CNN protects listener privacy, visit cnn.com/privacyLearn more about your ad choices. Visit podcastchoices.com/adchoices