Chris Simon, infamous NHL goon-turned-KHL all-star, likes to punch people in the face. He doesn't like when someone tries to prevent him from punching people in the face.
Simon, a winger for Metallurg, wanted to punch former Florida Panthers forward Janis Sprukts of Dinamo Riga in a Friday night game, presumably in the face. The KHL linesmen wanted to prevent this from happening. Simon responded by punching over and through a linesman, hitting the official in the process. But the real offense comes at about the 1:05 mark: