Respectfully, I disagree. The socioeconomic status of the sorts of people that tend to despise the TSA, and the SES of the sorts of people that tend to be front-line TSA agents are very, very different. Those self-same TSA agents rarely fly (and thus bear no inconvenience), and are unlikely to have had the benefit of the sort of education that leads one to (a) despise incursions against civil liberties and (b) open opportunities for employment above that of a TSA agent.
I agree that there is not a good overlap between people employed by the TSA and people subjected to the policies of the TSA. I'm less convinced that there is a huge socioeconomic gulf between those groups. The cost of airfare relative to overall cost of living has substantially declined in my lifetime. I would agree with your assertion if the passengers of airlines were like they were 20 years ago. But my contemporary experiences suggest that anyone who has a salary of a TSA employee can afford to fly somewhere. I fly out of Orlando, Florida and I don't see a huge difference between the clientele of Southwest and the clientele of Walmart.