An anti-government protestor waves his national flag during a demonstration demanding the resignation of Yemeni President Ali Abdullah Saleh, in Sanaa, Yemen, Tuesday, March 8, 2011. A Yemeni security official says about 2,000 inmates have staged a revolt at a prison in the capital, taken a dozen guards hostage and joined calls by anti-government protesters for the country's president to step down. The official says the unrest in the Sanaa prison erupted late Monday when prisoners set their mattresses ablaze and occupied the facility's courtyard. Portrait of former Yemeni President Ibrahim Al-Hamdi seen bottom right. (AP Photo/Muhammed Muheisen)