In pictures: At least 51 dead after clashes in Egypt during 40th anniversary celebration of last war with Israel
A riot police officer fires tear gas during clashes between anti-Morsi protesters and members of the Muslim Brotherhood and ousted Egyptian President Mohamed Morsi supporters, along a road at Ramsis square, which leads to Tahrir Square, at a celebration marking Egypt's 1973 war with Israel, in Cairo October 6, 2013. At least 51 people were killed and more than 90 wounded in clashes during protests in Egypt on Sunday, security sources and state media said, as the crisis since the army seized power three months ago showed no sign of abating.AMR ABDALLAH DALSH/Reuters
Riot police armoured personnel carriers fire rubber bullets and tear gas at members of the Muslim Brotherhood and supporters of ousted Egyptian President Mohamed Morsi during clashes with anti-Morsi protesters along a road at Ramsis square, which leads to Tahrir Square, at a celebration marking Egypt's 1973 war with Israel, in Cairo October 6, 2013. At least 51 people were killed during protests across Egypt on Sunday, a security source and the state news agency said.AMR ABDALLAH DALSH/Reuters
A riot police officer, on a armoured personnel carrier surrounded by anti-Morsi protesters (foreground), fires rubber bullets at members of the Muslim Brotherhood and supporters of ousted Egyptian President Mohamed Morsi along a road at Ramsis square, which leads to Tahrir Square, during clashes at a celebration marking Egypt's 1973 war with Israel, in Cairo October 6, 2013. At least 51 people were killed and more than 90 wounded in clashes during protests in Egypt on Sunday, security sources and state media said, as the crisis since the army seized power three months ago showed no sign of abating.AMR ABDALLAH DALSH/Reuters
Pro-military crowds and supporters of the former president, Mohammed Morsi, pelt each other with rocks, fireworks and firebombs in street battles near Ramsis Square, Cairo, Egypt, Sunday, Oct. 6, 2013. The deadly clashes took place on the 40th anniversary of the start of the 1973 Mideast war, a holiday the military-backed government had wanted to use to pay tribute to the armed forces, whose chief ousted Morsi in a popularly supported coup on July 3.Emad Abdul Rahman/The Associated Press
An anti-Morsi protester waves a national flag during clashes with members of the Muslim Brotherhood and ousted Egyptian President Mohamed Morsi supporters, along a road at The Ramsis square which leads to Tahrir Square, during a celebration marking Egypt's 1973 war with Israel, in Cairo October 6, 2013. At least 51 people were killed during protests in Egypt on Sunday, the interior ministry said, as the crisis since the army seized power three months ago showed no sign of abating.AMR ABDALLAH DALSH/Reuters
Anti-Morsi protesters throw stones while clashing with members of the Muslim Brotherhood and supporters of ousted Egyptian President Mohamed Morsi, along a road at Ramsis square, which leads to Tahrir Square, during a celebration marking Egypt's 1973 war with Israel, in Cairo October 6, 2013. At least 51 people were killed and more than 90 wounded in clashes during protests in Egypt on Sunday, security sources and state media said, as the crisis since the army seized power three months ago showed no sign of abating.AMR ABDALLAH DALSH/Reuters
A supporter of ousted Egyptian President Mohammed Morsi raises his hands with a gesture of an open palm with four raised fingers that has became a symbol for the Rabaah al-Adawiya mosque where hundreds of Muslim Brotherhood supporters were killed by security forces in August, in Ramsis Square, Cairo, Egypt. Deadly clashes left tens dead and scores injured as rival crowds of supporters of the military and backers of Morsi poured into streets around the country Sunday, as a holiday marking the anniversary of the last war with Israel turned into a showdown between the country's two rival camps.Sabry Khaled/The Associated Press
Anti-Morsi protesters (bottom) clash with members of the Muslim Brotherhood and supporters of ousted Egyptian President Mohamed Morsi, along a road at Ramsis square, which leads to Tahrir Square, during a celebration marking Egypt's 1973 war with Israel, in Cairo October 6, 2013. At least 51 people were killed and more than 90 wounded in clashes during protests in Egypt on Sunday, security sources and state media said, as the crisis since the army seized power three months ago showed no sign of abating.AMR ABDALLAH DALSH/Reuters
Supporters of ousted Egyptian President Mohammed Morsi carry a wounded protester during clashes with riot police in Cairo, Egypt, Sunday, Oct. 6, 2013. Rival crowds of supporters of Egypt's military and backers of the Islamist president deposed by the army poured into streets around the country Sunday, as a holiday marking the anniversary of the last war with Israel turned into a showdown between the country's two camps.Khaled Kamel/The Associated Press
An Egyptian mourns a loved one, who was a supporter of Egypt's ousted President Mohammed Morsi, killed during clashes with security forces in Cairo, Egypt, Sunday, Oct. 6, 2013. Deadly clashes left tens dead and scores injured as rival crowds of supporters of the military and backers of Morsi poured into streets around the country Sunday, as a holiday marking the anniversary of the last war with Israel turned into a showdown between the country's two rival camps.Hassan Ammar/The Associated Press
Egyptians wave national flags, and one holds a poster showing Egyptian Defense Minister Gen. Abdel-Fattah el-Sissi, center, and former presidents Anwar Sadat, left, and Gamal Abdel-Nasser, right, during celebrations marking the anniversary of the last war with Israel, in Tahrir Square, in Cairo, Egypt, Sunday, Oct. 6, 2013. Deadly clashes took place as rival crowds of supporters of the military and backers of ousted President Mohammed Morsi poured into streets around the country Sunday, and the holiday celebration turned into a showdown between the country's two rival camps.Khalil Hamra/The Associated Press
Military aircraft participate in flying display over Tahrir Square as Egypt celebrates the anniversary of an attack on Israeli forces during the 1973 war, in Cairo October 6, 2013.MOHAMED ABD EL GHANY/Reuters
Military helicopters are seen flying over while people gather at Tahrir Square to celebrate the anniversary of an attack on Israeli forces during the 1973 war, in Cairo October 6, 2013.MOHAMED ABD EL GHANY/Reuters
Supporters of ousted President Mohammed Morsi are detained during clashes with riot police in Cairo, Egypt, Sunday, Oct. 6, 2013. Rival crowds of supporters of Egypt's military and backers of the Islamist president deposed by the army poured into streets around the country Sunday, as a holiday marking the anniversary of the last war with Israel turned into a showdown between the country's two camps.Nameer Galal/The Associated Press
Members of the Muslim Brotherhood and supporters of ousted Egyptian President Mohamed Morsi run from tear gas released by riot police during clashes along a road at Kornish El Nile which leads to Tahrir Square during a celebration commemorating Egypt's 1973 war with Israel in Cairo October 6, 2013. Thousands of supporters of deposed Egyptian President Mohamed Morsi marched through Cairo on Sunday towards Tahrir Square, where pro-army supporters gathered to celebrate the anniversary of an attack on Israeli forces in 1973.AMR ABDALLAH DALSH/Reuters