An anti-Mursi protester walks on a wall, that was built by police early on Thursday in order to prevent clashes between protesters and police along a road which leads to the U.S. embassy, near Tahrir Square in Cairo November 29, 2012. The body writing Egypt's new constitution began a session to vote on a final draft on Thursday, a move President Mohamed Mursi's allies in the Muslim Brotherhood hope will help end a crisis prompted by a decree expanding his powers. REUTERS/Amr Abdallah Dalsh (EGYPT - Tags: POLITICS CIVIL UNREST)