I'm over-Diana'd, over-9/11'd, over-war on terrorismed and definitely over-Brownblaired. I recognize that 9/11 is the worst thing to ever happen to Americans, but it's a blip beside two world wars where 50,000 dead in a day was not considered overkill, and where the Blitz, Dresden, Hamburg, Hiroshima and Nagasaki (and this is regardless of who was wrong, right, or merely in the way at the time) perpetrated civilian deaths on an epic scale.
I daresay there are a few thousand Vietnamese who would view America's napalming of villages, strafing of rice paddy workers and deforestation programmes as equally appalling pieces of work. When it comes to targetting and killing civilians, I don't make a distinction between formally-declared wars between countries and various movements against certain countries, whether they are called guerillas, insurgents, terrorists, or resistance fighters.
There's also the danger of picking at the 9/11 scabs again and again so that they WON'T heal, and of trundling out the event for annual display and dissection as if no other country could possibly bear witness to far, far worse.