Plot: 2011/03/10 Headlines: Thousands Protest as Wisconsin GOP Advances Anti-Union Bill in State Senate; Clashes Continue in Libya; Toll for East Estimated at 400; BBC News Crew Detained, Beaten by Libyan Forces; Egyptian Protesters Attacked; ElBaradei Explores Presidential Bid; Yemeni President Proposes Referendum on New Constitution; Dalai Lama Steps Down as Tibet's Political Leader; Illinois Abolishes Death Penalty; NPR CEO Resigns Over Video Controversy; Loughner Pleads Not Guilty, Hearing Set for May; Two-Thirds of States Have Cut Mental Health Services; Former U. S