Here is a bit from an excellent article by Ahdaf Soueif in the UK's Guardian newspaper:
Since Friday the military has openly engaged with civilian protesters in the heart of the capital. The protesters have been peacefully conducting a sit-in in Ministries' Street to signal their rejection of the military's appointment of Kamal Ganzouri as prime minister.
Ganzouri announced that no violence would be used to break up the Cabinet Office sit-in. Moments later the military took on the protesters. For a week Military Police and paratroopers had kidnapped activists from the streets, driven them off in unmarked vehicles, interrogated them and beaten them. On Friday they kidnapped Aboudi – one of the "Ultras" of the Ahli Football Club. They gave him back with his face so beaten and burned that you couldn't see features – and started the street war that's been raging round Ministries' Street for the last three days.
The protesters have thrown rocks at the military. The military has shot protesters, and thrown rocks, Molotov cocktails, china embossed with official parliament insignia, chairs, cupboards, filing-cabinets, glass panes and fireworks. They've dragged people into parliament and into the Cabinet Office and beaten and electrocuted them – my two nieces were beaten like this.
They beat up a newly elected young member of parliament, jeering: "Let parliament protect you, you son of … ". They took a distinguished older lady who's become known for giving food to the protesters and slapped her repeatedly about the face till she had to beg and apologise. They killed 10 people, injured more than 200, and they dragged the unconscious young woman in the blue jeans – with her upper half stripped – through the streets.
The message is: everything you rose up against is here, is worse. Don't put your hopes in the revolution or parliament. We are the regime and we're back.