Pink was in her hometown of Philadelphia performing an acoustic version of "Who knew" where she stopped the song as she saw a crying girl in the audience. Pink asked if everything was OK and found out the reason why the child was crying was over fans fighting in front of her at the show.
Pink offered the girl a Rice Krispie treat as fans passed her up front to get the gift from the pop singer which stopped the girl from crying as Pink gave the fans a tongue lashing over the fighting.
She then restarted "Who Knew" over again without incident.-DocFB
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