Thousands pay tribute at NYC World Trade Memorial
Sept 11 Memorial Plaza
Credit: AP
An American flag hangs from partially-built 1 World Trade Center as visitors stroll the grounds of the 9/11 memorial plaza in the World Trade Center site in New York Monday, Sept. 12, 2011, on the first day that the National September 11 Memorial was opened to the public. (AP Photo/Mike Segar, Pool)
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