He also said officials have a duty to remind people of the horrible attack for decades and not let future generations think we "covered it up." Meanwhile, some victims' groups are calling for even bigger memorials. "The families need to realize that the footprints are only two acres, and it's not what the coalition of 9/11 families' position paper (calls for)," said Monica Iken, founder of September's Mission, a family group.

A memorial, yes, for the beloved dead and the heroes who tried in vain to save them. But why allow acts of destruction to overshadow acts of creation that the twin towers represent? The victims did not create the blank space there, in the heart of the greatest American metropolis. Why are we memorializing, forever, the terrorists' hideous triumph?