Plot: Headlines for April 29, 2016; After 36-Day Student Occupation, University of California at Davis Chancellor Is Put on Leave; Northern Arizona U. Students Launch Sit-In as Fossil Fuel Divestment Movement Sweeps Country; Historian Peter Linebaugh on 'The Incomplete, True, Authentic & Wonderful History of May Day'; Is Trump's Rhetoric Reigniting Anti-Immigrant Legislation in Arizona; Lena Rothman: A Trump Supporter Assaulted Me at a Rally - Then Police Arrested Me Instead of Him