Anti-Government Protesters Clash With Pro-Mubarak Demonstrators

CAIRO, EGYPT – FEBRUARY 04: A shop in Tahrir Square is spray painted with the word Twitter after the government shut off internet access on February 4, 2011 in Cairo, Egypt. Anti-government protesters have called today ‘The day of departure’. Thousands have again gathered in Tahrir Square calling for Egyptian President Hosni Mubarak to step down. (Photo by Peter Macdiarmid/Getty Images)