There's a big difference between "parenting" kids who are in your care, or who you have a close relationship (approved by parents) with and "parenting" random kids you see in the grocery store, at the movie theater, at a party, etc. All safety instances aside, it is absolutely not your place to correct other people's behavior...regardless of age. If you wouldn't correct an adult, then don't do it to a child. Parenting is the responsibility of the parents and as we've seen on this board, everyone parents differently. Yes, it's unfortunate that some parents don't properly supervise their kids or teach them how to behave properly. And as frustrating as it may be to see, it's still not ok to step in and take over the parents' job. If the kid is being really disruptive, then find the parent or other authority figure (if necessary) and have them handle it.
***all "you's" are general***
I disagree. I think sometimes the Village needs to step in, if only because sometimes adults don't fully realize the impact of actions either.
Here's an example, from years ago in my life.
I went to a basketball game. This was a Big East team and even though they were bleachers, they were assigned seats. I went with a season ticket holder, so he really wanted and expected us to stay in our seats.
One or two rows in front of us was a group of about 5 or 6 boys, about 10-11 years old. they had an oaktag sign supporting the team (or a player, i can't remember). When ever there was a basket made or that team member made a basket everyone would cheer and the kids would hold up the sign. Over their heads. Directly in our line of vision. There were adults around, but I wasn't sure which adults were with the kids, or their relation to them. I spoke directly to the kids: "hey guys, could you do us a favor? We're fans too and when you hold up your sign you block our view. I know its tempting but please don't raise it above your heads. you can block your own vision but not ours."
The kids totally 'got' it and a woman sitting near by overheard and later I saw her address a kid by name and remind him about lifting the sign.
I think that was a bit of 'parenting' on my part - to an adult I probably would have been a bit more blunt (or honestly an adult might have had long enough arms the sign didn't bother me, and I would have left it to the people behind me). But I don't think it was inappropriate. I think the kids and the adult all appreciated I had enough respect for the kids' intelligence to just deal with them directly. I think the adult simply hadn't realized the sign would be in the way, so its not like she was being irresponsible or ignoring an issue, she didn't realize there was an issue to be dealt with until I said something.