MSNBC’s Ari Melber hosts “The Beat” on Tuesday, September 15, and reports on the latest updates in Breonna Taylor’s case, the new COVID scandal the Trump admin faces, and the probe the DOJ is launching into former Trump aide John Bolton over his book critical of Trump. The show also includes a special look at the latest episode of “Mavericks with Ari Melber,” featuring Judd Apatow.