That's pretty short-sighted. Plane hijackings are very dangerous situations and large death tolls, enormous investigations, threaten air travel, etc from a single event. I don't think the nerd calculus about the number of deaths from car crashes tells the whole story. 1968-1972 was also a different time from now and there is a lot more air travel and many more unstable people in this country. In the 1960s, the word "fascist" didn't mean "someone I didn't vote for" and words like genocide, oppression, etc mean far different things today and all this results in a lot more potential problems. Should TSA be a lot better, do they screw up a lot, is a lot of it a bit silly? Sure, but the idea that we just say "oh, well, there are a lot more car crashes so let's just no secure air travel" is just hard to take seriously. Sometimes doesn't simple nerd calculus doesn't tell the whole story. But, people always like to make claims like "people are so bad at determining" and it's a kind of unintended (usually) condescension but I think it's really a Dunning-Kruger thing. There are real reasons why simply comparing hijacking deaths to car crash deaths is not so simple that it leads to the conclusion that we shouldn't spend much money it. I've also seen ridiculous statements like that we only focus on airports because "lawmakers fly a lot more than normal people" it's crazy-talk.