Earlier quoted context omitted.
https://www.yahoo.com/news/us/articles/pennsylvania-girls-10... "The borough also says visitors encounter its "Play Smart Rules" when entering the park, including a specific instruction: "Do not twist chains."" So the town buys crappy swings, knowing full well that kids are going to spin them (who hasn't done this a million times as a kid?) Then they slap up a sign telling the kids not to do that. Basically entrapmen…
My company makes dangerous equipment like lawn mowers. Because of this, I have to go through training on how to design equipment to be safe. And the rule is very clear. If there is any possibility of an issue, you need to redesign it so the problem can't happen, you need to put gaurds in place so the problem can't happen, or only if those two fail, are you allowed to put up a warning sign. That is an ordered list so…
But the problem with twisting chains is that it needs a warning.
And so both putting in the law, and arresting the kid, are a way to protect the borough, a government organization, from liability when something goes wrong.