MSNBC's Ari Melber hosts "The Beat" on Thursday, May 5, and reports on President Trump's unpredictable agenda that is upending markets, his barrage of lawsuits over frequently unlawful or unconstitutional orders and the new Pope. Plus, Al Sharpton and Al B. Sure! make a "Fallback" appearance. Aziz Huq and Catherine Rampell also join the show.
