Its MAINLY the streamers/social media "influencer" that are rude on trains/subways
Like Johnny Somali and Shafar Delgado types. honestly would love if more of these people were detained like Somali and had their social media privileges removed. of course, you will also see the bratty teen/college students here and there but thats all countries (maybe a bit more prevalent to white/black American who are "louder")
I'd say break their phones and you will stop their rudeness for the remainder of their stay
Love if their passports get banned but I personally don't want them back in the US