Opponents of ousted Egyptian President Mohammed Morsi rally in Tahrir Square in Cairo on Sunday, July 7, 2013. The country's new leadership wrangled over the naming of a prime minister, as both the Muslim Brotherhood and their opponents called for new mass rallies Sunday, renewing fears of another round of street violence over the military's ousting of Islamist President Mohammed Morsi. (AP Photo/Khalil Hamra)

Photo by: Khalil Hamra

Opponents of ousted Egyptian President Mohammed Morsi rally in Tahrir Square in Cairo on Sunday, July 7, 2013. The country's new leadership wrangled over the naming of a prime minister, as both the Muslim Brotherhood and their opponents called for new mass rallies Sunday, renewing fears of another round of street violence over the military's ousting of Islamist President Mohammed Morsi. (AP Photo/Khalil Hamra)