Supporters of Egypt’s ousted President Mohammed Morsi chant slogans during a protest in Ramses Square in downtown Cairo, Egypt, Friday, Aug. 16, 2013. Heavy gunfire rang out Friday throughout Cairo as tens of thousands of Muslim Brotherhood supporters clashed with vigilante residents in the fiercest street battles to engulf the capital since the country’s Arab Spring uprising. Tens of people were killed in the fighting nationwide, including police officers. (AP Photo/Khalil Hamra)