Supporters of Egyptian President Mohamed Mursi shout slogans during a protest around Raba El-Adwyia mosque square in Cairo June 21, 2013. Tens of thousands of Islamist supporters of Mursi gathered in Cairo after Friday prayers to show support for the elected head of state before protests that his opponents hope can force him from office. REUTERS/Mohamed Abd El Ghany (EGYPT – Tags: POLITICS CIVIL UNREST)