Riots mark 2nd anniv. of Egypt revolution

Egyptian protesters try to tear down a cement wall built to prevent them from reaching parliament and the Cabinet building near Tahrir Square, in Cairo, Egypt, Thursday, Jan. 24, 2012.

Egypt's black-clad riot police fired tear gas in fierce dawn clashes with dozens of protesters on Thursday when they tried to tear down a cement wall built to prevent demonstrators from reaching parliament and the Cabinet building. The violence came on the eve of the second anniversary of Egypt's Jan. 25 uprising, which toppled longtime authoritarian president Hosni Mubarak in 2011.

Egyptian riot police clash with protesters near Tahrir Square, Cairo, Egypt, Thursday, Jan. 24, 2013.

AP Photo/Tribune Review, Justin Merriman

An Egyptian throws a Molotov cocktail over a wall as protesters clashed with police in Tahrir Square in Cairo on Thursday Jan. 24, 2013, the eve of the second anniversary of the uprising that overthrew Hosni Mubarak.

Egyptian protesters burn a flag of the Muslim Brothers during a protest against the Islamist President Mohammed Morsi, January 24, 2012 in Cairo. A few dozen men and youths tried to dismantle the wall of concrete blocks that blocked a street leading to Tahrir Square, focal point of demonstrations that broke out on January 25, 2010 and led to Mubarak's resignation 18 days later.

Egyptian protesters walk away after riot police used tear gas during a protest in Tahrir Square to call for the fall of Islamist President on January 24, 2012 in Cairo. Police clashed with protesters in on the eve of the second anniversary of the uprising that overthrew Hosni Mubarak, as demonstrators tried to dismantle a security barrier and called for the fall of President Mohamed Morsi.

Egyptian demonstrators wave the national flag and shout slogans during a protest in Alexandria on January 25, 2013 -- the second anniversary of the revolution that ousted Hosni Mubarak.

An Egyptian protester displays the national colors in Tahrir Square, Cairo, Egypt, Friday, Jan. 25, 2013. Egyptian opposition protesters are gathering in Cairo's Tahrir Square to mark the second anniversary of the uprising that toppled Hosni Mubarak's autocratic regime.

Thousands of Egyptian protesters gather for a demonstration in Cairo's landmark Tahrir Square on January 25, 2013. Thousands of Egyptians marched on Tahrir Square to demand change, two years after the uprising that ousted Hosni Mubarak and ushered in an Islamist government, as sporadic clashes erupted nearby.

Egyptian protesters hang a giant banner in the colors of Egypt's national flag on barbed wires in front of anti-riot soldiers at the entrance to the presidential palace in Cairo, Egypt, Friday, Jan. 25, 2013.

An Egyptian protester shouts anti-Morsi slogans in front of the presidential palace in Cairo, Egypt, Friday, Jan. 25, 2013. Authorities expect a violent anniversary of the 2011 uprising that toppled long-time authoritarian President Hosni Mubarak. Arabic reads, "Save Egypt from the rule of the brotherhood leader." and at left, "From Assiut train accident to Badrasheen train accident, where are you?"

Former Egyptian presidential candidate Hamdeen Sabbahy (center) joins protesters in a march from Mostafa Mahmud mosque to Tahrir Square in Cairo on January 25, 2013. Thousands of Egyptians marched to demand change, two years after the uprising that ousted Hosni Mubarak and ushered in an Islamist government, as sporadic clashes erupted nearby.

Egyptian protesters march from Mostafa Mahmud mosque to Tahrir Square in Cairo on January 25, 2013. Thousands of Egyptians marched on Tahrir Square to demand change, two years after the uprising that ousted Hosni Mubarak and ushered in an Islamist government, as sporadic clashes erupted nearby.

Egyptian security forces are seen through a crack in a security wall as skirmishes break out between protesters and security forces near Tahrir Square, Cairo, Egypt, Friday, Jan. 25, 2013.

Egyptian protesters take cover as they clash with riot police near Tahrir Square, Cairo, Egypt, Friday, Jan. 25, 2013. Two years after Egypt's revolution began, the country's schism was on display Friday as the mainly liberal and secular opposition held rallies saying the goals of the pro-democracy uprising have not been met and denouncing Islamist President Mohammed Morsi. With the anniversary, Egypt is definitively in the new phase of its upheaval.

Egyptian protesters throw stones during clashes with riot police near Tahrir Square, Cairo, Egypt, Friday, Jan. 25, 2013. Two years after Egypt's revolution began, the country's schism was on display Friday as the mainly liberal and secular opposition held rallies saying the goals of the pro-democracy uprising have not been met and denouncing Islamist President Mohammed Morsi.

Egyptian protesters take cover as they clash with riot police near Tahrir Square, Cairo, Egypt, Friday, Jan. 25, 2013. Two years after Egypt's revolution began, the country's schism was on display Friday as the mainly liberal and secular opposition held rallies saying the goals of the pro-democracy uprising have not been met and denouncing Islamist President Mohammed Morsi.

Egyptian protesters set fires during clashes with riot police near Tahrir Square, Cairo, Egypt, Friday, Jan. 25, 2013.

An Egyptian protester runs for cover from tear gas fired by riot police during clashes near Tahrir Square, Cairo, Egypt, Friday, Jan. 25, 2013. Two years after Egypt's revolution began, the country's schism was on display Friday as the mainly liberal and secular opposition held rallies saying the goals of the pro-democracy uprising have not been met and denouncing Islamist President Mohammed Morsi.

Volunteers at an emergency medical clinic in the Kasr El Dobara Evangelical Church near Tahrir Square take care of people injured during clashes between security forces and demonstrators in Cairo, Egypt, Friday, Jan. 25, 2013.

Egyptian protesters throw stones at riot police during clashes near Tahrir Square, Cairo, Egypt, Friday, Jan. 25, 2013. Youth activists and opposition groups have called for large rallies to mark the second anniversary of Egypt's Jan. 25, 2011 uprising that toppled long-time authoritarian leader President Hosni Mubarak.

Skirmishes break out between protesters and security forces near Tahrir Square, Cairo, Egypt, Friday, Jan. 25, 2013. Egyptian opposition protesters gathered in Cairo's Tahrir Square to mark the second anniversary of the uprising that toppled Hosni Mubarak's autocratic regime.

Egyptian protesters burn tires as policemen fire tear gas during clashes following a demonstration marking the second anniversary of the uprising that ousted Hosni Mubarak, in the coastal city of Alexandria, January 25, 2013. Police in Alexandria fired tear gas at protesters, witnesses said, as nationwide rallies marked the anniversary.

Egyptian security forces are seen through a hold in the wall, as they throw stones at protesters in Sheikh Rayhan street, that leads to the Interior Ministry headquarters, near Tahrir Square, on January 25, 2013. Thousands of Egyptians marched in Tahrir Square to demand change, two years after the uprising that ousted Hosni Mubarak and ushered in an Islamist government, as sporadic clashes erupted nearby.

Egyptians demonstrators scatter as riot police fire tear gas during clashes in Cairo's Tahrir Square on January 25, 2013.

An Egyptian protester is carried away after being injured during a protest in Tahrir Square on January 25, 2013 in Cairo.

Egyptian protesters clash with riot police near Tahrir Square, Cairo, Egypt, Friday, Jan. 25, 2013. Two years after Egypt's revolution began, the country's schism was on display Friday as the mainly liberal and secular opposition held rallies saying the goals of the pro-democracy uprising have not been met and denouncing Islamist President Mohammed Morsi.

An Egyptian protester evacuates an injured boy during clashes near Tahrir Square, Cairo, Egypt, Friday, Jan. 25, 2013.

An Egyptian protester lights flares during a demonstration in Cairo's landmark Tahrir Square on January 25, 2013. Thousands of Egyptians marched to demand change, two years after the uprising that ousted Hosni Mubarak and ushered in an Islamist government.