MSNBC's Ari Melber hosts "The Beat" on Friday, March 22, and reports on a deadly shooting at a Moscow concert hall, Donald Trump's cash crunch, and GOP dysfunction in the House. Matt Bodner, Michael McFaul, and Chai Komanduri join to discuss. Plus, rapper Giggs and attorney Andrew Weissmann join Melber in the latest "Fallback" installment.
