The Late Show with Stephen Colbert S03 E31 Mark Ruffalo, Chris Matthews, Gilbert Gottfried, Thundercat

Stephen acknowledges the terrorist attack in Lower Manhattan. Thundercat sits in with the band and provides musical accompaniment. Mark Ruffalo discusses ‘Thor: Ragnarok’. Chris Matthews discusses recent politics and his new book, ‘Bobby Kennedy: A Raging Spirit’. Gilbert Gottfried discusses ‘Gilbert’.