What's going on with fan disorder at European games?

Aston Villa's match against Young Boys was stopped for more than five minutes because of fan disorder [Getty Images]Donyell Malen had just given Aston Villa the lead at home to Young Boys. He ran over to the corner flag, only to be met with a barrage of cups from the visiting supporters and left with a cut to the top of his head. After the Netherlands forward scored his second goal in Villa's 2-1 Europa League victory on Thursday night, more objects were thrown while Young Boys fans ripped out s