Muslim Brotherhood

Egyptian students, supporters of the Muslim Brotherhood and ousted Islamist president Mohamed Morsi,  flash the four finger symbol known as "Rabaa", meaning four in Arabic, which is associated with those killed in the crackdown on the Rabaa al-Adawiya protest camp in Cairo last year, as they demonstrate outside Cairo University, on April 9, 2014. An Egyptian appeals court rejected a request that new judges be appointed for two trials involving ousted Islamist president Mohamed Morsi, judicial officials said.

Mahmoud Khaled/AFP

Egyptian students, supporters of the Muslim Brotherhood and ousted Islamist president Mohamed Morsi, flash the four finger symbol known as “Rabaa”, meaning four in Arabic, which is associated with those killed in the crackdown on the Rabaa al-Adawiya protest camp in Cairo last year, as they demonstrate outside Cairo University

A supporter of the Muslim Brotherhood makes the Rabaa four-fingered gesture in front of a burning police vehicle in Cairo January 10, 2014. The four-fingered "Rabaa" sign is in reference to the police clearing of the Rabaa al-Adawiya protest camp on August 14 last year that killed hundreds of supporters of ousted President Mohamed Mursi who were camped out in Cairo.

Al Youm Al Saabi newspaper.Reuters

A supporter of the Muslim Brotherhood makes the Rabaa four-fingered gesture in front of a burning police vehicle in Cairo on Friday. The gesture has become a symbol of protest and refers to the clearing of the Rabaa al-Adawiya camp by security forces on August 14 last year that killed scores of supporters of ousted President Mohamed Morsi.

Supporters of ousted president Mohamed Morsi block a street during clashes with Egyptian security forces in Nasr City, Cairo on January 8, 2014. An Egyptian court adjourned the murder trial of deposed president  Morsi to February 1, citing "weather conditions" that prevented the Islamist's transport to court from prison.

Virginie Nguyen Hoang/AFP

Supporters of ousted President Mohamed Morsi block a street during clashes with Egyptian security forces in Nasr City, Cairo, on Wednesday. An Egyptian court adjourned the murder trial of Mr Morsi to February 1, citing “weather conditions” that prevented the Islamist’s transport to court from prison.

Egyptian students who support the Muslim Brotherhood (background) shoot fireworks at riot policemen (foreground) during clashes outside the University of Cairo campus in the capital

Mahmoud Khaled/AFP

Egyptian students who support the Muslim Brotherhood shoot fireworks at riot policemen during clashes outside the University of Cairo campus in the capital Cairo.

A supporter of the Muslim Brotherhood and ousted Egyptian President Mohamed Mursi shouts slogans in front of tear gas fired by riot police and army, during clashes at El-Talbyia near Giza square, south of Cairo, November 29, 2013. Mursi's supporters have staged frequent protests across Egypt, many of them after Friday prayers, since the army deposed him on July 3 in response to mass protests against his rule, and arrested most of the top leaders of his Muslim Brotherhood.

Amr Abdallah Dalsh/Reuters

A supporter of the Muslim Brotherhood and ousted Egyptian president Mohamed Morsi shouts slogans as riot police and soldiers fire tear gas during clashes at Talbiya, in Giza, Egypt

Female students of Al-Azhar University shout slogans against the military and interior ministry while gesturing with four fingers after last night's clashes as they block Moustafa Al Nahas street in front of Al-Azhar University Campus...Female students of Al-Azhar University, supporters of the Muslim Brotherhood and ousted Egyptian President Mohamed Mursi, shout slogans against the military and interior ministry while gesturing with four fingers after last night's clashes as they block Moustafa Al Nahas street in front of Al-Azhar University Campus at Cairo's Nasr City district, November 21, 2013. A student was shot dead in clashes late Wednesday between supporters of ousted Egyptian President Mohamed Mursi and security forces at Al-Azhar University in Cairo, state newspaper al-Ahram reported on Thursday. The "Rabaa" or "four" gesture is in reference to the police clearing of the Rabaa al-Adawiya protest camp on August 14.

Amr Abdallah Dalsh/Reuters

Female students of Al-Azhar University, supporters of the Muslim Brotherhood and ousted Egyptian president Mohamed Morsi, shout slogans against the military and interior ministry as they block Moustafa Al Nahas street in front of university campus at Cairo’s Nasr City district

A supporter of Egypt's ousted President Mohammed Morsi shouts to a police officer outside of a police academy compound were the trial of ousted President Mohammed Morsi is held in Cairo, Egypt, Monday, Nov. 4 2013. After four months in secret detention, Egypt's deposed Islamist president defiantly rejected a court's authority to try him Monday, saying he was the country's "legitimate" leader and those that overthrew him should face charges instead. The trial was then adjourned until Jan. 8 after several interruptions.

Manu Brabo/AP

A supporter of Egypt’s ousted president Mohamed Morsi on Monday shouts at police officers outside a police academy compound where the trial of the former president is being held in Cairo, Egypt. Read more

A supporter of Egypt's ousted President Mohammed Morsi wears a button showing Morsi and a slogan in Arabic that reads, "Morsi for Egyptian presidency 2012," during a protest in Cairo, Egypt, Friday, Nov. 1, 2013. Some 20,000 police officers and soldiers will guard the upcoming trial of Egypt's toppled president on Nov. 4, as Islamist opponents plan massive protests that may spark more turmoil in the country.

Amr Nabil/AP

A supporter of Egypt’s ousted president Mohammed Morsi wears a button with a slogan in Arabic that reads “Morsi for Egyptian presidency 2012″, during a protest in Cairo on Friday.

Supporters of Egypt's ousted President Mohammed Morsi hold posters showing victims of a military crackdown on their protest camp during a march in old Cairo, Egypt, Friday, Aug. 23, 2013. Arabic reads, "no for treachery", "no for military coup" and  "martyrs of republican guard massacre ." Egyptian security and military forces deployed Friday around Cairo, closing off traffic in some major thoroughfares and in the city center ahead of protests by supporters of ousted President Mohammed Morsi. The rallies are a test of whether Morsi's supporters can keep up their pressure despite an intensive security crackdown on the Muslim Brotherhood, from which he hails.

Amr Nabil/AP

Supporters of Egypt’s ousted President Mohammed Morsi hold posters showing victims of a military crackdown on their protest camp during a march in old Cairo, Egypt, on Friday. Read more

A member of the Muslim Brotherhood and supporter of ousted Egyptian President Mohamed Mursi places posters of Mursi on a lamp post during a protest in front of the courthouse and the Attorney General's office in Cairo.

Amr Abdallah Dalsh/Reuters

A member of the Muslim Brotherhood and supporter of ousted Egyptian president Mohamed Morsi places posters of Mr Morsi on a lamp post during a protest in front of a courthouse and the attorney-general’s office in Cairo.