Racism is everywhere, and often far more dramatic and in your face than what you are describing. What you are describing is still wrong! And was made illegal for a reason. But anyone coming from Asia, Africa, South America, and most of Europe is going to just shrug their shoulders at what you just described.
I have yet to see even the most progressive Western European country that didn’t have a huge hate against Roma/Travelers, or Indian community that didn’t have some serious Muslim/Hindu friction, or Chinese vs Non-Chinese, etc. And let’s not talk about Eastern Europe, or African tribal/clan warfare!
The issue here is that the more you talk about all the wrongs and specifics, the more you highlight finer granularities of identity, the more you base things on some small group, the more it splits everyone, the more different groups/factions end up getting created, the more finger pointing happens, etc.
The more people start thinking of us vs them, their identity and how they are different/split from everyone else, etc. and past grievances, the more they start thinking about retribution, control/exclusion, etc.
For an incredibly evolved version of this, check out a (brief summary of [https://en.m.wikipedia.org/wiki/Caste_system_in_India].
It ends up in a nearly infinitely Balkanized hellscape where the more someone knows about someone else, the more likely they will end up enemies than friends. And eventually, nearly everyone is an enemy with their neighbors, and sometimes even themselves.
If we try to focus on what should happen, and the best common identity we can, and punish divergences from that instead, at least we can be mostly going in that, someone similar direction. And have at least some idea what common elements we can be friends on, and what we shouldn’t talk about lest we become (likely) enemies.
It is far from perfect, but at least it has some cohesive identity and direction, rather than infinite levels of infighting. Nothing is perfect.
Together, we can be strong. Alone, we are weak and easy to pick off.
The issue the US always has had, is that really the only common theme between all its different groups, is the desire to make money, and be left alone to do what they want.
But then when times get tough, inevitably some groups want to make everyone else do what they want and/or take everyone else’s money.
