Egypt Breaking: 21 Killed in Car Bomb Attack on Christian Church

LATER UPDATES: "Up to 50" Killed in Bombing of Alexandria Church

UPDATE 1530 GMT: A picture from the post-bombing protests in Alexandria today:

UPDATE 1510 GMT: Protesters and police are clashing near the site of today's bombing. There are reports of injuries and suffocation from tear gas used by anti-riot forces.

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