Everyone who flies (in commercial airplanes, at least) knows the ridiculousness of so-called "airport security". While innocent passengers are harassed and prohibited from taking the most necessary and inoffensive items into the airport, while letting actual guns and ammo through.
TSA rules as to what you cannot get passed security have really been going beyond any notion of the ridiculous - not only are they banning Disney souvenirs, but they now are scared shitless about the dangers of snow globes. WTF?
The real story on this, however, is the fact that we, the citizenry, allow the government to impose the most stupid, arbitrary and capricious rules on us without complaining. This one may be a relatively trivial one, but it gets us used to the intrusion of the government into our private lives.