Do you correct other peoples children?
I will never forget when I was a teen and working at Target. There was a child climbing in and out of the bag well (where they pack your stuff into bags) at the cash register. He would stand up in it and then jump as far as he could out of it. I was pretty scared he would hurt himself so I said to him "Hey buddy, let's not jump off the bagging area, ok?"
I got so cussed out by the mom. Obviously it was bad, I remember it almost 20 years later, lol.
This is when I learned that you just don't correct other peoples children. Even if you are worried they will hurt themselves, mind your own business. It would have to be immediate danger before I stepped in, otherwise I defer to the parent and don't say anything.
How about you?