Senator Bernie Sanders first got involved in social justice movements as a University of Chicago student fighting against segregated housing. Today Sen. Sanders is one of the most recognizable figures in Washington, widely credited with pushing more progressive policies into the mainstream of the Democratic party. He joined David to talk about why he believes Donald Trump is the most dangerous president in US history, the trouble he has defending the Electoral College and how young voters can transform America.To learn more about how CNN protects listener privacy, visit cnn.com/privacyLearn more about your ad choices. Visit podcastchoices.com/adchoices