This is a clear and brutal siege on what had been a peaceful protest. Sirens in the background, helicopters overhead. More gunfire, and watching streams of men trying to break up the human chain protecting Tahrir Square from one direction. People linking arms, in rows 3-4 thick, have secured all but one of the entrances to Tahrir Square. They're getting charged by thugs. Women and children are still in the center of Tahrir Square. More gunshots. We are watching petrol bombs thrown from a building above, onto the crowd below.
News broken on twitter via @LaraABCNews, February 2, 2011