This week features a one-on-one interview with David Mamet, playwright and author of "Recessional: The Death of Free Speech and the Cost of a Free Lunch." This week's panel discussion will include Nancy MacLean, historian at Duke University and author of the "Democracy in Chains: The Deep History of the Radical Right's Stealth Plan for America"; and David Leonhardt, Pulitzer Prize-winning columnist and author of the New York Times daily newsletter, "The Morning."