Pretty good article on Wired about how the response to the Sept 11th attacks may have hurt, rather than helped, the U.S. (not that it is any major secret. It's just very well-stated, here); and how to keep such things from happening in the future.

How to Beat Terrorism: Refuse to Be Terrorized | Danger Room | Wired.com

(And here's a bonus, related article from Scientific American: Did the U.S. Overreact to the 9/11 Attacks? Undoubtedly | Cross-Check, Scientific American Blog Network )