NEW YORK - President Barack Obama led an emotional dedication on Thursday of a museum that commemorates the traumatic events of Sept. 11, 2001, built on the "ground zero" site of the twin towers that fell that day.
Obama and his wife, Michelle
, joined by Bill and Hillary Clinton and former New York
Mayor Michael Bloomberg
, toured the museum, which includes artifacts from many of the nearly 3,000 people who died in the hijacked-plane attacks in New York
"Here we tell their story so that generations yet unborn will never forget," Obama said in dedicating a museum that he called "this sacred place of healing and hope."