Ten years is a long time.
As memories fade, it is important for those of us that cannot forget that awful day to remind those that have of what happened - and even more importantly, "why" it happened.
The "Why" of it all has been the subject of much debate and argument over the last ten years. Lee Harris' Al Qaeda's Fantasy Ideology, written in the summer of 2002, offers an explanation that is worth thinking about.
See: Al Qaeda's Fantasy Ideology
"KNOW YOUR ENEMY” is a well-known maxim, but one that is difficult to observe in practice. Nor is the reason for this hard to fathom: If you are my enemy, it is unlikely that I will go very much out of my way to learn to see things from your point of view. And if this is true even in those cases where the conflict is between groups that share a common culture, how much more true will it be when there is a profound cultural and psychological chasm between the antagonists?
That is just the first paragraph.
Read the whole thing.