“How in the hell is that legal???”
Easy, we are no longer a nation of laws.
Fear of the Lord is the beginning of wisdom. Step two is understanding that the US is not a Norman Rockwell painting. There has been all sorts of this kind of thing peppered through our history. It’s just not taught in public schools.
You don’t have to be black or indian to have a history of horrible injustice in your ancestor’s lives in the US. And I’m talking about the 20th century.
It’s just that now we see all of it, thanks to the internet.