NEW YORK -- Twenty years after the Sept. 11 terrorist attacks on the U.S., memorial services and moments of silence were held where the World Trade Center once stood in New York City and other locations on Saturday.
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U.S. former President Bill Clinton, former First Lady Hillary Clinton, former President Barack Obama, former First Lady Michelle Obama, President Joe Bien, First Lady Jill Biden, former New York City Mayor Michael Bloomberg and Speaker of the House Nancy Pelosi participate in a moment of silence. © Reuters
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