Ken Burns hopes that "The American Revolution" can help us remember where we came from and put us back together again, regardless of politics. #Colbert | The Late Show with Stephen Colbert

55K views · 536 reactions | With the North Vietnamese Army closing in on Saigon, the U.S. Embassy gates were besieged by a "sea of people." "Last Days in Vietnam" airs April 28 on PBS American Experience. Watch video clips and more at pbs.org/lastdaysinvietnam. | American Experience | PBS | Facebook