Animals!: Philly fans loot, flip car, set fire as Super Bowl celebration turns ugly

I don't understand why in some cities when they win a championship, they destroy property and steal. 
It doesn't make any sense at all.  This stuff doesn't happened in New York.  But, then again we have more championships than any other city.  

Fox News reports what started out as a joyous party on the streets of Philadelphia on Sunday night following the Eagles' Super Bowl championship started getting rowdy as the night continued.

Boisterous fans smashed a Macy's store window, looters broke into a convenience store, and some flipped over a car, the Philadelphia Inquirer reported.

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