MSNBC's Ari Melber hosts "The Beat" on Thursday, May 9, and reports on Donald Trump's criminal trial. Plus, Melber delivers a special report on the Kendrick-Drake rap battle. Libby Casey and Emily Bazelon join.

MSNBC's Ari Melber hosts "The Beat" on Monday, May 13, and reports on Michael Cohen's testimony in Donald Trump's criminal trial. Kristy Greenberg, Molly Jong-Fast, Maya Wiley and Duncan Levin join.