A man holds a flag during a protest in Sanaa, Yemen, April 4, 2011. Tens of thousands of protesters gathered Monday in Sanaa to demand immediate ouster of President Saleh and to support the protesters in Taiz province. Death toll of protesters from the clashes in Yemen's southern province of Taiz on Monday rose to at least 16, while dozens of others were injured by live bullets and tear gas, according to witness and Police Colonel Abdullah al- Atiky. [Xinhua]