Can I shout at other people's children since they are misbehaving and causing a ruckus?
You don't think the parents will handle it?
I am a responsible person. I will teach these children a lesson, so they'll be respectful to adults
I mean, go ahead and yell at the children if that pleases you. Don't be surprised if you get some angry parents coming your way.
I don't care. I bet their parents would thank me since they have forgotten how to discipline their kids.
That would probably make them more upset. You shouldn't scold other people's kids, they can get real defensive about it. You should go up to the parents and let them know how they are behaving.