Clashes as Egyptians mark uprising anniversary | Gallery

Essam Mohamed - a 37-year old protester who lost an eye in clashes with police last year - protests the politics of Egypt(***)s post-revolution president Mohamed Morsi, as well the killing of protesters in previous clashes, on the second anniversary of Egyptian revolution.

The majority of people in Tahrir Square on Friday demanded that President Morsi step down.

The crowd of thousands alleged that President Morsi had "betrayed" the revolution, and the should follow President Hosni Mubarak before him in stepping down.

Ultras Ahlawy - football fans who have been involved in previous violent incidents - clashed on Friday with security forces guarding the interior ministry - on the second anniversary of the Egyptian revolution.

Protesters carrying away an injured demonstrator, during clashes with Central Security Forces on Kasr Ainy street, off Tahrir Square.

Protesters marching to Tahrir Square, on Friday - the second anniversary of Egyptian revolution - in objection to the political decisions of Egypt(***)s post-revolution president Mohamed Morsi.

Protesters carrying away an injured protester, during clashes with Central Security Forces on Kasr Ainy street, off Tahrir Square. Police sources told Al Jazeera that more than 450 people were injured in clashes across the country on Friday.

Many of the protesters carried signs with a simple instruction to President Morsi: "Leave".

A protester leads chants amidst clashes with police, on the second anniversary of Egyptian revolution.

Ultras Ahlawy clashing with security forces guarding the interior ministry in Cairo, on the second anniversary of the Egyptian revolution. The young men said the attacks were in revenge for the killing of their colleagues in Port Said stadium last year.

A protester holds a tear-gas canister that was fired by security forces in Cairo.

Central Security Forces wearing newly-issued riot gear in Cairo, the Egyptian capital, on Friday.

Aerial view of Tahrir Square at 11:00am on Friday, before most marchers had arrived.

Aerial view of Tahrir Square at 8:35pm, showing tens of thousands filling the iconic protest venue in the Egyptian capital.

A protester holding a necklace he made of tear-gas canisters that were fired by security forces.

Ultras Ahlawy clashing with security forces guarding the interior ministry.

A protester running to throw a tear-gas canister back at Central Security Forces, during clashes on Kasr Ainy street, off Tahrir Square.

Ultras Ahlawy clashing with security forces guarding the interior ministry.

Many protesters came with their entire families, both to mark the anniversary of the uprising and to demand reforms from their government.

Tens of thousands of demonstrators were present at the protest in Cairo.

Ultras Ahlawy clashing with security forces guarding the interior ministry in Cairo.

Protesters gathering ammunition, in the form of stones, to pelt security forces with.

The clashes in Cairo were mainly in the streets surrounding the interior ministry.

Protesters demanded that the Muslim Brotherhood(***)s Mohamed Morsi step down as president.

Violent clashes continued for several hours in Cairo.

Protesters mainly threw stones at security forces, who fought back with tear gas.

Those involved in the clashes were primarily young men.

Tahrir Square largely remained peaceful, though violent clashes did occur in streets adjacent to it.