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Photo by: Vahid Salemi

In this June 9, 2009, file photo, Iranian opposition leader Mahdi Karroubi attends a press conference in Tehran. Pro-government militiamen attacked Mr. Karroubi's home with homemade bombs and beat one of his bodyguards unconscious Thursday, Sept. 2, 2010, an opposition website reported, in an apparent attempt to keep him from attending the annual state-sponsored rally known as Quds Day, or Jerusalem Day. (AP Photo/Vahid Salemi, File)

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