There isn’t much to say. It is still too soon to ask history for a greater (or lesser) meaning. Has America learned anything about this day except that tragic events can be twisted and spun into lies that beget wars?
From Dan Gillmor’s entry:
The world didn’t unravel to match our worst fears. There’s been some progress, and some steps backwards. We are, as usual, muddling along as a species. We can do better, and somehow I think we ultimately will.