Henry Louis Gates Jr. on Season 4 of 'Finding Your Roots'

'Dr. Henry Louis Gates Jr., author and Alphonse Fletcher University Professor and Director of the Hutchins Center for African and African American Research at Harvard University, joins us to discuss season 4 of his PBS series Finding Your Roots. In each episode, Gates dives into the ancestry of a celebrity to learn about their family's origins, connections to famous/infamous people and surprising secrets are part of their family's past. Season 4 guests include Amy Schumer, Larry David, Bernie Sanders, Questlove, Lupita Nyong’o, Christopher Walken and Aziz Ansari. ' -- The Leonard Lopate Show