The Europa League is pretty much a competition for fans to show off their hooliganism on the European stage.
Last night Standard Liege fans destroyed a fence breaking into the Feyenoord home section during the 2-1 defeat.
Police were on the scene soon enough, battering the Liege fans back into their away section.
A Feyenoord fan caught the police thumping away at the Standard fans on film and uploaded to Instagram.
Below is a video of the Standard fans breaking into the home section.