It's only been a day since Egyptian President Mohamed Morsi's security forces and anti-Morsi activists signed an agreement to end a week-long string of violence, but the two groups are already back at each other's throats. Security forces outside the Islamist president's palace walls fired tear gas and water cannons at protesters armed with Molotov cocktails Friday, as Morsi warned demonstrators to back off. In a message on his Facebook page, the president warned that his officers won't hesitate to act "firmly to apply the law."

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