Protesters run as police use water cannons to disperse them at a crossroad leading to the U.S. embassy in Sanaa September 14, 2012. Security forces in Yemen fired warning shots and used water cannons against hundreds of protesters near the U.S. embassy in Sanaa on Friday, a day after demonstrators angered by a film deemed blasphemous to Islam stormed the fortified compound. REUTERS/Mohamed al-Sayaghi (YEMEN - Tags: POLITICS CIVIL UNREST CRIME LAW RELIGION)