I would add one more item to that list. The more intrusive and visible the TSA is, the more they remind the population that there are terrorists out there tryi

I would add one more item to that list. The more intrusive and visible the TSA is, the more they remind the population that there are terrorists out there trying to kill us. Keeping the population scared of a boogeyman is useful for getting away with all sorts of things, such as domestic spying.