From today's New York Times:
A bonfire of office furniture from the ruling party headquarters was burning nearby, and the carcasses of police vehicles were still smoldering. The police appeared to have retreated from large parts of the city.
On Friday, 17 police stations throughout Cairo were torched, with protesters stealing firearms and ammunition and freeing some jailed suspects. They also burned dozens of police trucks in Cairo, Alexandria and Suez. On Saturday, protesters besieged a police station in the Giza neighborhood of Cairo, looted and pulled down Egyptian flags, then burned the building to the ground.
Before the army arrived, young Egyptians — some armed with truncheons grabbed off the police — created a human chain at the museum's front gate to prevent looters from making off with any of its priceless artifacts.
People taking back power, however fleetingly, makes for some crazy situations.