An anonymous reader writes "In the small town of Haren http://nl.wikipedia.org/wiki/Haren_(Groningen) with less then 20.000 inhabitants a girl put up an invite for her birthday-party on facebook. Little did she know that because she set it to public it would become viral. Somewhere between 3000 and 5000 people visited the small community. Which ended in riots, fights with the police, injuries and lots of damaged stores and property. http://www.ad.nl/ad/nl/1012/Nederland/article/detail/3320601/2012/09/22/Centrum-Haren-is-een-ravage.dhtml"
Link to Original Source