MSNBC's Ari Melber hosts "The Beat" on Friday, July 11, and reports on the MAGA civil war over the Epstein files that is igniting a clash inside Trump's DOJ, NYC's Zohran Mamdani and the latest on President Trump's controversial deportation policies. Paul Krugman, Richard Farley, Faiz Shakir, Michelle Goldberg and Alencia Johnson join.