Egypt: protesters and police clash in Tahrir Square – in pictures

Egyptian riot police clash with protesters in Tahrir Square Photograph: Amr Abdallah Dalsh/Reuters

A wounded man is helped by his fellow protesters Photograph: Khalil Hamra/AP

Egyptian riot police fire at protesters from the top of a vehicle Photograph: Khalil Hamra/AP

Protesters run as police fire tear gas into the crowds Photograph: Asmaa Waguih/Reuters

A veiled Egyptian protester clashes with riot police Photograph: Mohamed Abd El Ghany/Reuters

Egyptian riot police beat a protester as they advance through the streets Photograph: Khalil Hamra/AP

A gas-masked protester runs amid tear gas during the clashes Photograph: /EPA

Protesters smash the windscreen of a police vehicle in Tahrir Square Photograph: Ahmed Khaled/EPA

A female protester gestures as she argues with riot police officers Photograph: Khalil Hamra/AP

Police officers throws rocks at protesters Photograph: Khalil Hamra/AP

A protester throws a stone at riot police Photograph: Mohamed Abd El Ghany/Reuters

Riot police scuffle with a protester Photograph: Mahmud Khaled/AFP/Getty Images

A woman sits praying against the violence in the midst of riot police Photograph: Amr Abdallah Dalsh/Reuters

Riot police and protesters continue to clash throughout the day Photograph: Khalil Hamra/AP

Protesters carry an injured man through Tahrir Square Photograph: Asmaa Waguih/Reuters

A protester holds an Egyptian flag next to a police vehicle that was set on fire Photograph: Reuters

As darkness descends, the clashes between police and protesters continue Photograph: Khaled Desouki/AFP/Getty Images

The streets around Tahrir Square are illuminated by fires from the protests Photograph: Khaled Desouki/AFP/Getty Images