SHOOT: Ummmm...your country happens to be a very relevant clue as to who you are and what you are about. To pretend otherwise is to be...well...dumb. My concern is that security will be taken too far eventually. On the other side of terrorism we could see fascism.
As far as the privacy argument goes, libertarians seem to be pursuing a losing cause. Few ethical qualms stand up to the great god security, and ethical expectations will have to adjust to reflect the new reality.