People are people everywhere.
The US has its dark past. Slavery. Genocide of Native Americans. CIA coups overthrowing democracies. Invasions. Etc.
But there’s nothing special about the US and its various apartheids, genocides and atrocities. Right now it’s Israel, moving from apartheid to genocide. We all know the history of European colonialism, Germany’s genocide, the Balkans… There’s China and Tibet ad the Uyghurs. Look at Rwanda … it’s everywhere.
Human civilization is barely able to contain the underlying hatreds and violence. Certain types of people take advantage of this by inciting, stoking the hatreds to get what they want because they don’t care about the consequences to others. The current formula in the Western world is to use immigrants as the “other” to demonize. “Invasion” is the word the right is using to “other” immigrants now in the US, UK and EU. Hatred was mostly directed against Muslims for a while but now it is pretty much any immigrants. (If you think desperate, terrified people fleeing violence, extreme inequality and the climate crisis are the enemy you’d better realize that’s quite possibly you in a few years.)
Civilization doesn’t continue without leadership willing to fight that. And you can’t get and keep that kind of leadership if your system is open to corruption. This is because if corruption is enabled then the bad actors drive out the good ones who can’t compete because they won’t be corrupt. (That’s why progressives don’t win here.)
I’m not optimistic about the future.