[dkural]

Adults aren't quiet "in public" either. While I do believe in boundaries, as long as kids aren't physically bothering strangers, they have every right to run around and make noise in public as the street musician, the loudly speaking teenager, and the arguing couple.

This doesn't mean a parent is not teaching the kid, it is that their conception of how a kid ought to behave in public is different from yours, thus they have nothing to be 'ashamed' of in their performance. Indeed, I often feel bad for the kid when a parent values other people's judgment more than their child's perfectly valid desire to explore their surroundings.