Harris puts Trump on 'defense' in historic clash

The Beat with Ari Melber - A podcast by Ari Melber, MSNBC

MSNBC's Ari Melber hosts "The Beat" on Wednesday, September 11, and reports on the historic Harris-Trump debate, and Taylor Swift's endorsement of Kamala Harris. Howard Dean, Amesha Cross, and Versha Sharma join.