Protesters throng streets of Cairo - in pictures

An effigy depicting President Hosni Mubarak hangs from a traffic light as anti-government protesters demonstrate in Tahrir square Photograph: Emilio Morenatti/AP

An man steps on a banner carrying a portrait of President Hosni Mubarak and reading: 'We demand that you leave'. It is next to shells allegedly fired by security forces in Tahrir Square Photograph: Andre Pain/EPA

An Egyptian policeman cries as he receives a warm welcome from pro-Mubarak supporters in Cairo, three days after police largely disappeared from the streets Photograph: Amr Nabil/AP

An Egyptian man and woman hold signs in Cairo's Tahrir Square Photograph: Miguel Medina/AFP/Getty Images

People gather in central Cairo as opposition leaders call for a 'march of a million' against the Egyptian government Photograph: Mohammed Abed/AFP/Getty Images

South Korean tourists pass soldiers and debris as they walk through the streets of Cairo to find a bus to take them to the airport Photograph: Lewis Whyld/PA

Six-year-old Liam Johnson is held by his father, Peter, as they wait to be evacuated by US authorities at Cairo International airport Photograph: Chris Hondros/Getty Images

Supporters of President Hosni Mubarak demonstrate in front of an Egyptian army checkpoint in Cairo Photograph: Amr Abdallah Dalsh/Reuters

A drummer leads chants in Tahrir Square as tens of thousands flood into the heart of Cairo Photograph: Victoria Hazou/AP

A tank stands amid the crowds as protesters gather in central Cairo Photograph: Hannibal Hanschke/EPA

An Egyptian military helicopter flies over Tahrir Square during the 'million man' march Photograph: Jim Hollander/EPA

A protester sits on the shoulders of a fellow demonstrator as he shouts slogans during anti-Mubarak protests in Cairo Photograph: Suhaib Salem/Reuters

Anti-government protesters hold an Egyptian flag Photograph: Yannis Behrakis/Reuters

Demonstrators in the heart of Cairo Photograph: Tara-Todras Whitehill/AP

Crowds continue to flock into Tahrir Square Photograph: Marco Longari/AFP/Getty Images

Men demonstrate in Tahrir Square as the scale of the demonstrations continues to grow Photograph: Peter Macdiarmid/Getty Images

Demonstrators pray in Tahrir Square as more than 250,000 people flood into the city centre Photograph: Tara-Todras Whitehill/AP