Anti-government protesters hold a Bahraini flag over their heads during an anti-government rally in Budaiya, west of Manama, March 9, 2012.Tens of thousands of Bahrainis demonstrated on Friday to demand democratic reforms, stepping up pressure on the U.S.-allied government with the biggest protest yet in a year of unrest. REUTERS/Hamad I Mohammed (BAHRAIN - Tags: CIVIL UNREST POLITICS)