I know people who fly internationally on business who will go to almost any lengths to avoid having to fly through the United States these days, because the offensive attitude of the US airport security is so much worse than almost any other country they fly through.

The fact that they have a job to do should not be interpreted as a license to act capriciously and rudely.

I will concede this point - the fact that they are poorly trained, badly supervised, and have little or no intelligent direction from above is not their fault.