Anti-government protesters pray in Tahrir Square in downtown Cairo, Egypt, Friday, Feb. 11, 2011. The Egyptian government announced later Friday that President Hosni Mubarak has stepped down. (AP Photo/Khalil Hamra)

Photo by: Khalil Hamra

Anti-government protesters pray in Tahrir Square in downtown Cairo, Egypt, Friday, Feb. 11, 2011. The Egyptian government announced later Friday that President Hosni Mubarak has stepped down. (AP Photo/Khalil Hamra)