Supporters of Yemen's Shiite Houthi group shout slagans during a mass demonstration in Sanaa, Yemen, on April 17, 2014. Thousands of suuporters of the Shiite Houthi group rallied on Thursday to denounce assassination against prominent Shiite politician Ismail al-Wazir on April 8 by unknown gunmen which resulted in the death of al-Wazir's three bodyguards. (Xinhua/Mohammed Mohammed)
