A protester confronts a riot policeman as he demonstrates in downtown Cairo, Egypt, Tuesday, Jan. 25, 2011. Hundreds of anti-government protesters marched in the Egyptian capital chanting against President Hosni Mubarak and calling for an end to poverty. (AP Photo/Mohammed Abu Zaid)

Photo by: Mohammed Abu Zaid

A protester confronts a riot policeman as he demonstrates in downtown Cairo, Egypt, Tuesday, Jan. 25, 2011. Hundreds of anti-government protesters marched in the Egyptian capital chanting against President Hosni Mubarak and calling for an end to poverty. (AP Photo/Mohammed Abu Zaid)