I am sorry to hear that as well. I don't like the idea of these things, but it should be random, no? Would you be more encouraged to hear that only Middle Eastern men were chosen for the scanners? Then we'd have a real problem.
Let's be real here, when has a white, teenage girl ever committed an act of terror?
I'm not advocating racial profiling, but a terrorist absolutely fits a certain profile and we'd be stupid not to use that information to our advantage. We are at war, hurting someone's feelings should be the least of our concerns. Do terrorists give a damn about our feelings or rights?
No, they don't. But that's not who's going to be hurt by it. It's the guy who gets singled out just because of what he looks like, and that's not right.
The whole thing is a bad deal all the way around. Bad idea, even worse execution.