There's a lot of crazy soccer stories out there, but over all the years there may not be anything quite like this. In so many words...
Last Sunday, an amateur soccer match in Brazil came to an unbelievably gruesome end when a referee was murdered by outraged fans. His head was then cut off and placed on a spike. The beheading was retaliation; the ref initially stabbed a player to death.
It happened in the Maranhão region of northeastern Brazil. Thirty-year-old Josenir dos Santos Abreu approached the referee, 20-year-old Otávio Jordão da Silva during a match to argue a call. Abreu reportedly threw a punch at da Silva, who then took out a knife he was carrying with him during the match, and stabbed the player. Abreu died of his wounds en route to the hospital.
Shortly thereafter, fans reportedly attacked da Silva--beating him, stoning him, and doing all sorts of things that concluded with a King Joffrey style DECAPITATION--with Da Silva's head being mounted on a stake in the middle of the field.
In conclusion, soccer fans get worked up about sports. This seems applicable: