11 of 12: A NYPD officer leads demonstrators over the Brooklyn bridge towards downtown Manhattan during a One Million Moms for Gun Control Rally, Jan. 21, 2012, in New York. Demonstrators called for new gun control legislation, demanding a ban on assault weapons and stricter regulations on gun purchases. The One Million Moms for Gun Control group formed in the wake of last month's massacre at a Connecticut elementary school. (AP Photo/John Minchillo) (AP Photo/ John Minchillo)

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