There was a case some years ago where the only suspicion of the guy was A: He had paid cash at the airport for his ticket, and B: He seemed to be overly anxious about his briefcase. (Just like in the movie Airport with Dean Martin and Burt Lancaster).
The authorities strip-searched him and found a fairly large sum of cash in the briefcase, which was confiscated pending an investigation.
After an extensive investigation it was found that the guy was some rarities dealer who always dealt in cash. It still took him an expensive attorney and a Federal court hearing to get his cash back despite the investigator's findings.
This was just one of several dozen abusive cases at the hands of airport security that I read about well before TSA. In another case at Metro Airport, police suspected a guy who flew into Metro from Atlanta, who along with his entire family was detained and strip-searched upon arrival in Detroit. The stuff was eventually found, inside a couple of his kids. There was criminal activity and legitimate suspicion involved, but does that justify strip-searching an entire family arriving on a domestic commercial flight in the 1970s?
I have already seen a comedic proposal for all of us to fly commercially in the nude!!!
"We stay here, we die here. We've got to keep moving". Trucker Mark