Egyptian President Mohammed Morsi asked his countrymen to obverse the Tahrir Square anniversary in a "peaceful and civilised way." Oops:
Police clashed with President Mohammed Morsi's opponents in Cairo, dispersing protesters outside his palace as thousands gathered in Tahrir Square.
Alexandria and Suez also saw clashes. In Ismailia, protesters set fire to the HQ of the Muslim Brotherhood's party.
Critics accuse Mr Morsi of betraying the revolution, which he denies.
The president has appealed for calm to end the clashes, in which more than 100 people have been injured nationwide since Thursday.
Just another bloody speedbump on the road to sharia.