No. Sports is not where America's problem is. The US is absurdly evil and violent when it comes to pretty much anything else, but at sporting events you actually look restrained and pretty chill.

Nah lol. Americans will not only flip cars and set shit on fire when their team loses the superbowl, but the same people who do that kind of shit will complain when BLM does the same shit because the cops murdered someone. And setting aside fan rowdiness, American sports are incredibly exploitative of the players, cheerleaders, workers etc. Stadiums are huge drains on the public funds of the cities that build them. I could go on. American professional sports are a torment nexus.

Yeah, America may not be shit when it comes to praxis, but that means that the football games are about the same. I live in the most hardcore football city in the entire US, but can firmly say that other nations (UK and Brazil are the two nations I think of) make us look like babies during sporting events. Even during the messy matches where there's a massive upsetting loss, the worst that happens is some cars get torched in America. Whereas other nations will literally prevent you from bringing newspaper into the games because of how commonly it's used as a serious weapon in the right hands.