As in “five years is a long time for someone to get away with mass murder”.
Unfortunately, as Brad reminds us, “our” government has robbed us of full grounds to bark:
There is a point which is still, five years later, lacking its deserved prominence in our public discourse.
That point is this…
Imperialistic U.S. foreign policy made something like 9/11 inevitable. While most people are cowed by aggression, some won’t be. Pigeons will come home to roost. The Power Elite didn’t have to carry out 9/11 in order to benefit from it. They undoubtedly, in general terms, saw it coming. Their critics certainly did. The attacks were, while thoroughly evil, a natural reaction to the bloodthirsty policies we have been letting the politicians in this country get away with. (emphasis mine)
I remember from my childhood my mother telling me when someone hit me to hit them back. That’s a fairly common view, and it stuck with me. It’s a small thing, but it serves as a bit of interesting background when the portrayal of this as a clash of civilizations (rather than blowback from imperialism, amplified by religion) gets blasted all over the media.

