MSNBC's Ari Melber hosts "The Beat" on Tuesday, May 7, and reports on Stormy Daniels' testimony in Donald Trump's criminal trial. Maya Wiley, Renato Mariotti, Jacob Weisberg, and Nancy Erika Smith join.

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.