Democracy Spring: Over 400 Arrested at U.S. Capitol Protesting Corruption & Money in Politics; Lee Fang: Dark Money & Lobbyists Serving as Superdelegates Could Decide the 2016 Race; Beauty Secrets of the Spies: CIA Begins Investing in Skin Care Products That Collect DNA; Death by Gentrification: Alex Nieto Killed by Hail of Police Bullets in a Changing San Francisco.