A 6-year-old in Portland, Ore., has helped authorities recover a stolen bike by shaming the thieves.

The little girl wanted to help after her father’s bikes were stolen.

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She posted a sign, which reads, "Shame on you bike thieves!!! Your mom would be so disappointed! Even if she was a [villain], she still wouldn't want you to be a [villain] too!”

The sign brought in a ton of tips and helped a local resident and police find one of the stolen bikes.