51 Killed during clashes on Egypt's anniversary of the 6 October War

(Reuters) 

Deadly clashes erupted in Egypt on Sunday throughout the country. In Cairo pro-Morsi marches protesting against the military headed to Tahrir Square, where thousands were celebrating the 40th anniversary of the 1973 war against Israel and voicing support for the army.  Confrontations also took place outside the capital, with the death toll rising to 51 and at least 268 injured.
Egypt's Interior Ministry said it arrested 423 people in Cairo and Giza during clashes.
The National Alliance to Support Legitimacy, a coalition of Islamist forces supporting deposed president Mohamed Morsi, claimed that at least 11 protesters had been killed in clashes with security forces in Ramses Street in central Cairo.
Rallies took a violent turn in central Cairo's Garden City and Giza's Dokki district, where police fired rounds of teargas after local residents clashed during pro-Morsi protests heading towards Tahrir, eyewitnesses and Ahram Online reporters said. The sound of heavy gunfire was later reported.
In Giza's Manial district, where battles have become recurrent between residents and pro-Morsi protesters of late, clashes erupted between demonstrators and security forces. Two police vehicles were reportedly torched.

In Delga - a town south of Cairo held by Islamists until security forces raided it last month - a Brotherhood supporter was killed and at least three injured as a pro-Morsi march clashed with police.
Clashes took plce also in Alexandria, in the Sidi Beshr district after a pro-Morsi march, as well in Ismailia, Suez, the Beheira governorate and in Aswan in the south of the country.

The same day pro army rallies took place in cities that earlier witnessed clashes, including Alexandria, Ismailia, Al-Mahalla and Beni Suef. Marches in support of the army also took place in Damietta, Sohag, Aswan, Kafr El-Sheikh, Port Said, Mahalla and other governorates. Egypt's army traditionally celebrates the October war against Israel – which eventually led to the recovery of the Sinai Peninsula – each year with military performances. The day is a public holiday.
At Cairo's air defence stadium, celebrations organised by Egypt's armed forces were attended by army commander-in-chief El-Sisi, interim President Adly Mansour and former head of the Supreme Council of Armed Forces (SCAF) Hussein Tantawi. Gihan El-Sadat, widow of ex-President Anwar El-Sadat, during whose presidency Egypt staged the 6 October attack against Israel, was also present.
The celebrations include a play on Egypt's history as well as interludes from various singers including Egyptian artists Angham, Ihab Tawfik, and Lebanese diva Nancy Agram.