Thousands of protesters who oppose Egyptian President Mohammed Morsi were in Cairo's Tahrir Square on Sunday. Mohamed Abd El Ghany /Reuters/Landov hide caption

itoggle caption Mohamed Abd El Ghany /Reuters/Landov

Opponents of Egypt's President Mohammed Morsi burn the contents of an office of the Freedom and Justice Party, an arm of the Muslim Brotherhood, in Alexandria Friday. Two people were reportedly killed in clashes in the city. STR/AFP/Getty Images hide caption

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Protesters surround a burned Egyptian army vehicle in Cairo on Jan. 29, 2013. Amr Nabil/AP hide caption

itoggle caption Amr Nabil/AP

Mourners shouted during a funeral procession today in Port Said, Egypt, for some of those killed during Saturday's protests. /AFP/Getty Images hide caption

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Relatives of the Egyptian policemen who were killed in Port Said grieve during their military funeral in Cairo on Sunday. Amr Nabil/AP hide caption

itoggle caption Amr Nabil/AP

Protesters chant slogans during a demonstration in front of the presidential palace in Cairo, Egypt, on Sunday. Petr David Josek/AP hide caption

itoggle caption Petr David Josek/AP

An image grab taken from Egypt's Nile TV shows Egyptian President Mohamed Morsi (center) taking the oath of office during the official swearing-in ceremony at the Constitutional Court in Cairo on Saturday. -/AFP/Getty Images hide caption

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Egyptian campaign officials of the Muslim Brotherhood's candidate, Mohammed Morsi, celebrate over a giant poster of him at his campaign headquarters in Cairo, Egypt, Sunday. Amr Nabil/AP hide caption

itoggle caption Amr Nabil/AP