Police in Tinley Park say they were forced to cancel the final day of a carnival over the weekend after hundreds of young people swarmed the event in response to a social media invitation. WBBM's Bernie Tafoya reports. 

<p>Police in Tinley Park say they were forced to cancel the final day of a carnival over the weekend after hundreds of young people swarmed the event in response to a social media invitation. WBBM's Bernie Tafoya reports. </p>

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