In fact, there are basketball showdowns. For example, in Turkey and the Balkans (Greece, Serbia, Croatia), where basketball is very popular. It should be noted that the same fans go to football and basketball. Several years ago, a Belgrade Crvena Zvezda fan Marko Ivkovic was killed in a fight in Istanbul before a match with local Galatasaray, died from a knife wound. The case received a lot of attention.
Because there are more hooligans and too active young people towards football. And in the countries where basketball and hockey are most popular - the USA and Canada, a completely different approach to pain. It is more and more comfortable and calm and relaxed there. Sat down after work with cola and hot dog, and you look calmly as two-meter black guys, or bearded men snatch with each other. And in football, more active illnesses, that is, singing, chants, fires, are more aggressive, which charges many to fights and so on.
Although it is worth noting that such turbulent peoples as the Turks and Greeks translate football sick in basketball halls
The popularity of sports plays a key role in this issue. Football is the most popular sport in the world. Therefore, I wrote to the question (question of popularity) a work for the scientific conference and I know that the more a sport is liked by the fans, the more they are brought in in terms of communication with representatives or fans of other sports organizations. They become fiercely defending the point of view of their ego and the football club, which leads to such massive battles among the fans in football.