Tahrir Square violence enters a fourth day – in pictures

An Egyptian riot police officer fires teargas during clashes with protesters near Tahrir Square Photograph: Khalil Hamra/AP A protester throws a teargas canister, earlier thrown by riot police, during clashes along a road which leads to the interior ministry Photograph: Amr Abdallah Dalsh/Reuters Protesters carry a wounded man during clashes with riot police near Tahrir Square Photograph: Khalil Hamra/AP Egyptians carry the body of a protester killed in clashes with police during his funeral at Tahrir Square Photograph: Khalil Hamra/AP Protesters run for cover during clashes near Tahrir Square Photograph: Khalil Hamra/AP A protester looks on as policemen throw stones during clashes along a debris-strewn side street near Tahrir Square Photograph: Amr Abdallah Dalsh/Reuters A protester near Tahrir Square throws a teargas canister away Photograph: Khalil Hamra/AP An injured protester is carried away during clashes with riot police Photograph: Amr Abdallah Dalsh/Reuters A protester flashes V signs as he sits on the street during clashes Photograph: Khalil Hamra/AP Thousands of Egyptian protesters attend a rally in Tahrir Square on the fourth day of clashes Photograph: Khaled Desouki/AFP/Getty Images An Egyptian youth wearing a gas mask aims a slingshot during clashes Photograph: Mohammed Hossam/AFP/Getty Images A protester overwhelmed by teargas is aided by two men on a motorcycle Photograph: Tara Todras-Whitehill/AP An Egyptian dodges teargas Photograph: Mohammed Hossam/AFP/Getty Images Women protesters stand in a group in Tahrir Square Photograph: Tara Todras-Whitehill/AP An Egyptian medic stands near donated first aid supplies at one of the field hospitals Photograph: Amel Pain/EPA An injured protester is transported by motorbike for treatment during clashes with riot police Photograph: Goran Tomasevic/Reuters