At Ground Zero: The 9/11 anniversary

Associated Press
Roy Singham, Founder and chairman of Freedom to Connect speaks during the memorial service for Aaron Swartz, Saturday, Jan. 19, 2013 in New York. Friends and supporters of Swartz paid tribute Saturday to the free-information activist and online prodigy, who killed himself last week as he faced trial on hacking charges. (AP Photo/Mary Altaffer)

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A look at the Ground Zero memorial ceremony and events throughout the day, commemorating the 10-year anniversary of the 9/11 terrorist attacks.

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