[img]http://d.yimg.com/a/p/ap/20100903/capt.490e959e84e74fdd9dcbd234efaff273-208f20e7222b4c5f8d1027677813eb22-0.jpg?x=92&y=130&q=85&sig=Oi4.uP1suegDLrl7R11QFA--[/img]AP - Pro-government crowds swarmed outside the battered home of a key Iranian opposition leader Friday after militiamen attacked with firebombs and beat a bodyguard unconscious in a brazen message of intimidation and pinpoint pressure on dissent.