One reason for hooliganism can be:

Poor referee decisions can lead to feelings of frustration and anger among fans, which can escalate into hooliganism. When spectators believe that a referee has made unfair calls or flawed decisions, it may provoke intense emotional reactions. These feelings can contribute to unrest in the stands and can lead to aggressive behavior as fans express their dissatisfaction. This reaction can be amplified in high-stakes matches where emotions run high, and close calls can significantly impact the game's outcome. Thus, poor officiating can serve as a catalyst for hooliganism, as fans react to perceived injustices in a sport that frequently stirs their passions.

In contrast, extended player contracts focus on employment stability and do not directly influence fan behavior. High ticket prices may affect attendance and accessibility but are less likely to provoke aggressive reactions tied to the enjoyment of the game itself. Lastly, a lack of interest in the game generally leads to apathy rather than the passionate response that can sometimes manifest as hooliganism.