And in any case...
Well, your name sake, Santa--kids get joy from believing Santa's real...
Why spoil their good time when they're young?
Why be so quick to point out--rightly--that tomorrow there will still be terrorists, and troubles, and division, and all of that?
Let the grief-stricken people of New York and D.C. and America have their fairytale ending for the moment, even if it's not entirely true...the truth is overrated, anyway, if we really cared about things being perfectly true, well, our best fiction writers would have been out of a job long ago (some might extend that to include the writers of the Bible and Koran.)
Human beings desire the grandiose, the meta-human experience, something larger than themselves because, truth be tld, human beings are, by the sheer nuts and bolts of their existence, little more at their start than pieces of carbon strung together on a tiny blue dot in a tiny solar system in one of an untold number of galaxies...
Thet need to feel that things matter, that THEY matter--and sometimes, the only way to do that is through a letting them feel the thrill of the grandiose and poetic, even if the reality doesn't match that.
The people of America WANT to believe "Justice has been served."
They want to believe there IS such a thing as "justice."
They want to believe there's an order to things, that 9/11 wasn't just random.
And they want to believe that with Bin Laden's death, "the order of things" is restored.
Let them have their moment and their belief.
History will look back and be truer to events, just as we now look back more critically on the 1950s when, at the time, it was treated as the greatest time in world history.
Just like with Santa Claus, we'll grow out of this celebratory stage.
But for now, let them have the moment they've wanted for so long.