Part One: Margot Lee Shetterly- author of "Hidden Figures: The American Dream and the Untold Story of the Black Women Mathematicians who helped win the Space Race." - and Joylette Hylick, daughter of Katherine Johnson (whose story was told in Hidden Figures)- author of a children's book about her mother called "One Step Further." Part Two: Dr. Manning Marable, author of "The Great Wells of Democracy: The Meaning of Race in American Life."