Tourist Police sit in the shade on a road leading to the Coptic Cairo area on May 27, 2011 in Cairo, Egypt. Protests in January and February brought an end to 30 years of autocratic rule by President Hosni Mubarak who will now face trial. Food prices have doubled and youth unemployment stands at 30%. Tourism is yet to return to pre-uprising levels. (Photo by Peter Macdiarmid/Getty Images)

Coptic Christians attend a service in the Church of St Barbera on May 27, 2011 in Coptic Cairo, Egypt. (Photo by Peter Macdiarmid/Getty Images)

The owner of a shop selling antique cameras looks out for customers in the Coptic Cairo area on May 27, 2011 in Cairo, Egypt. (Photo by Peter Macdiarmid/Getty Images)

Local men drink coffee and smoke shisha pipes on May 27, 2011 in Downtown Cairo, Egypt. (Photo by Peter Macdiarmid/Getty Images)

McDonald's delivery drivers stand outside their restaurant on May 27, 2011 in Cairo, Egypt. (Photo by Peter Macdiarmid/Getty Images)

Workers pump fuel at a government owned petrol station on May 28, 2011 in Cairo, Egypt. (Photo by Peter Macdiarmid/Getty Images)

A tourist covers her head against the sun in sight of the Pyramid of Chephren on May 28, 2011 in Giza, Egypt. (Photo by Peter Macdiarmid/Getty Images)

A local boy watches as tourists photograph themselves at the Sphinx and the great Pyramid of Cheops on May 28, 2011 in Giza, Egypt. (Photo by Peter Macdiarmid/Getty Images)

Downtown Cairo is visible behind the Great Pyramid of Cheops on May 28, 2011 in Giza, Egypt. (Photo by Peter Macdiarmid/Getty Images)

Visitors take photographs at the Pyramid of Mycerinus on May 28, 2011 in Cairo, Egypt. (Photo by Peter Macdiarmid/Getty Images)

American tourists visit the Great Pyramid of Cheops on May 28, 2011 in Giza, Egypt. (Photo by Peter Macdiarmid/Getty Images)

A tourist policeman sits under the great Pyramid of Cheops on May 28, 2011 in Giza, Egypt. (Photo by Peter Macdiarmid/Getty Images)

A stall holder prepares food for sale at Ataba market on May 28, 2011 in Cairo, Egypt. (Photo by Peter Macdiarmid/Getty Images)

Shoppers move among tables containing clothes and shoes at Ataba market on May 28, 2011 in Cairo, Egypt. (Photo by Peter Macdiarmid/Getty Images)

A man sits on a truck stacked with boxed goods at Ataba market on May 28, 2011 in Cairo, Egypt. (Photo by Peter Macdiarmid/Getty Images)

A commuter passes a sign at Sadat Metro Station which shows the defacing of the former Mubarak Station on May 28, 2011 in Cairo, Egypt. (Photo by Peter Macdiarmid/Getty Images)

Commuters travel on the Metro on May 28, 2011 in Cairo, Egypt. (Photo by Peter Macdiarmid/Getty Images)

Commuters sit on a platform of the former Mubarak Metro Station, now re-named Al Shohadaa (Arabic for Martyrs) on May 28, 2011 in Cairo, Egypt. (Photo by Peter Macdiarmid/Getty Images)