Nov. 27, 2017: In a new original series, The Takeaway is examining the future of America's political parties. Today, Sen. Bernie Sanders lays out his vision for a progressive Democratic Party. Plus, a look at a growing mental health crisis in Puerto Rico; a deadly terrorist attack in Egypt; what the GOP tax plan really does for corporations; a filmmaker bears witness to the Rohingya crisis; and revolutionizing music by equalizing recording studios.