‘Liar’ versus indicted fraudster: Trump goes on trial as former foe speaks out from prison

Reporter Margaret Carlson joins MSNBC’s Ari Melber and rebuts Michael Avenatti's remarks that aired on "The Beat," saying he’s a “liar" and "fraud." Avenatti spoke out for the first time from prison in an extended interview with Melber. (Check out The Beat's playlist: https://msnbc.com/ari Connect with Ari Melber: https://www.instagram.com/arimelber)