Most of these mini docs have english subtitles so you can understand how things are here.
In Brasileirão for example, teams have two fronts of battle: to win and to not be relegated, and most of the times, the relegation battle is more intense and full of soul, 2023 battle was amazing.
As for the violence: people die, Torcidas Organizadas are more like the hooligans of thr english football in the 90's, where they make traps for other teams supporters in order to beat them up, in some cases where it got so bad, you can only have one team supporters in the stadium because of constant fighting, they have their different policies, they have informants all around the country that when a player is out partying, they send a squad of supporters to scare him off.
South American football culture is like a different world from reality, normal people are scared to go at the games and at the same time, they only go when they are defended by their organizadas who makes them safer by protecting them. It is fucking weird to explain.
I dont believe american sports have the same kind of superfans like football does, I never saw a news of someone dying over a sports game brawl, even more when they had similar population.