My thought is just smile at life and move on. We are all in on this together. The whole TSA thing is questionable as to how much it helps our safety. My feeling is we should either go for an Israeli type system, or back off to pre 9/11 levels. All this hell travellers face and not one true terrorist attack has been discovered. But until it finally resolves itself, I still take my hat off to these $12 per hour employees who move us through the lines. They aren't Phd candidates, but they work hard. Everyone of us has a story of some illogical or foolish conduct on their part.
In your case, for example, you could make a stink, write letters, even cost some guy his job or get him disciplined. But why. Laugh and move on. Again, we are all in this together. I always tell the ones that ARE nice, "thanks for doing this job."