How do you feel when you see kids acting up in public?

Where I live there are lots of ill mannered children, I don't in how a parent could let there kids act like little jerks, why is your kid putting there hand where they can potentially get it broken and why are you looking at me like a asshole for saying something, you should know better than to let your kid touch things that are just there, scream and yell, run around a busy area. Sometimes I wish I could discipline the child and the parent, more so the parent.
How do you feel when you see kids acting up in public?
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