A brass band marches surrounded by demonstrators as people gathers for Friday prayers followed by a demonstration in Tahrir square, Cairo, Egypt, Friday Feb. 18, 2011. (AP Photo/Khalil Hamra)

Photo by: Khalil Hamra

A brass band marches surrounded by demonstrators as people gathers for Friday prayers followed by a demonstration in Tahrir square, Cairo, Egypt, Friday Feb. 18, 2011. (AP Photo/Khalil Hamra)