A protester walks after he set fire to a police vehicle during clashes with riot police along a road which leads to the U.S. embassy, near Tahrir Square in Cairo September 13, 2012. Egypt's President Mohamed Mursi said on Thursday he supported peaceful protest but not attacks on embassies, after Egyptians angry at a film deemed insulting to the Prophet Mohammad climbed into the U.S. embassy in Cairo and tore down the U.S. flag. He pledged to protect foreigners in Egypt. REUTERS/Amr Abdallah Dalsh