The aerial pictures showed an impressive mass of humanity in Tahrir, but it is on Twitter that the extraordinary individual stories of the Egyptian revolution can be found.

So we can glimpse events through the eyes of Mahmoud Salam, or @Sandmonkey, one of the most prominent bloggers in Egypt. Yesterday he set out to Tahrir from Heliopolis across the city in a convoy of vehicles, a “car march”. “All hung the gasmasks outside the car and blew their horns, all the way to #tahrir. Many people joined,” he tweeted.

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