correct me if i'm wrong but the guy who got beaten up was the first who attacked... probably some hardstyle retard...

few comments from here http://www.youtube.com/watch?v=hqn4bTglG3Q

To clarify why this happened.. there were about 30.000 people who payed to listen to hardstyle/hardcore dj's. Then this band came and played ****ing metal shit which nobody wanted to hear. there were lots of signals (shouting, beer throwing etc), but they didn't leave the stage so it ended this way.
Well, I guess Rob has now learned the hard way that the typical Sensation visitor isn't the open minded music lover he'd expected them to be... :D And before everyone starts shouting "Rob Gee and Slipknot on stage blabla": It was just one of the nine Slipknot members (the DJ even...) who was on stage with Rob. The other band members had nothing to do with Slipknot whatsoever. Suckeeeers.