It was a sweeping generalization but fair in context of that persons social network. I also have friends and relatives who believe the same about the TSA.
Usually I'm all for citing, but your persistance in this argument is inconsequential.
If you don't or can't be bothered to do that then you should shut your pie hole.
I'm guessing that it's comments like this ("shut your pie hole") that are creating the sense that the quality of discussion at this site is in decline (http://news.ycombinator.com/item?id=4396747)
If you're going to make a claim like that, you should have some data.
If you don't then preface it with 'I think that' or 'people I know'.
If you don't or can't be bothered to do that then you should shut your pie hole.