Army tanks create a barrier for Pro-Mubarak supports trying to enter Cairo's Tahrir Square
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Egypt unrest: Army 'protects' Cairo's Tahrir Square

Tens of thousands of Egyptians have taken part in a "day of departure" to try to oust President Hosni Mubarak.

The army formed a protective barrier around the protesters in Cairo's Tahrir Square.

The BBC's Middle East editor Jeremy Bowen reports.

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