Interesting explantion, I guess angsty white kids could be due to being raised in America where white kids are often portrayed as being the ones who are bold enough to show such disdain for their parents.
example this song:
Trust me, as an American myself and one who didn't bother with borders when making friends, I can tell you they are far from the only ones it's just they are the ones mostly portrayed as such.
Black kids (mostly males) to a degree fear their parents. Usually cause punishments they receive are usually worst than the thing they did wrong (towards the males). Sometimes even getting punished for being right....(if you're male)
Hispanic kids I found are really close but will (respectfully) argue with the parents with ease.
Asian kids......well, I feel bad for them....there's a reason "Emotional Damage" became a meme.
White kids I found are the most free around their parents but get the most extreme punishments when they cross that line.