Violence towards match officials is not very common in the top division in world football, but sometimes, ultras overstep the mark and cause shocking scenes.
The latest incidents were in Bosnia during the encounter between Velez Mostar and Borac. The home fans invaded the field of play and the match had to be halted in the 82nd minute, but the worst was still to come.
Velez Mostar's ultras, furious with the performance of referee Sabrija Topalovic, attacked his vehicle after the game.
As well as attacking the vehicle, the ultras burnt the car to a crisp, which meant it could not be used. Luckily, none of the officials were in the vehicle at the time. In any case, it is still shocking.
Standout matches today