Anti-government protesters shout slogans during a protest demanding the ouster of Yemen's President Ali Abdullah Saleh outside Sanaa University March 1, 2011. Tens of thousands of protesters flooded Yemen's streets on Tuesday, dedicating a fresh "Day of Rage" to the 24 people killed in demonstrations demanding an end to the Saleh's three-decade rule. REUTERS/Ammar Awad (YEMEN - Tags: POLITICS CIVIL UNREST)