I am an ex-New Yorker, and I was shocked 9 years ago today to find that the twin towers had been destroyed by religious fanatics, with thousands of people murdered.
Having recently revisited downtown New York, I was reminded of how much, and how very real that area was as a killing field, if not a battlefield. If you are mindful you cannot go there and not be moved.
When there's talk of "ground zero mosques," "burning Korans," or even saying "we're one nation under god," it distracts from that butchered raw feeling of mourning and horror, in which we truly are all one.
Update: Also, see this post and comment thread on Daily Kos.