America is a nation of white supremacists with as many as 1/3 of us supporting right wing bigotry. Trump calls them 'my people'.
As I've mentioned, It Can Happen Here. Not suddenly but in stages, like it happened in Germany and Poland. It seriously starts in the Courts removing rights and citizenship. It didn't start with gas chambers and the Einsatzgruppen killing squads or even the Ghettos. Among loyal Nazis, as a real citizen, it became acceptable to be a Jewish baby killer. Shooting, throwing from heights or new original ways of murder was not uncommon and considered a 'minor' offense that punished adult Jews in multiple ways.

If you think about it the USA is in that latter stage with our treatment/murder of Black kids by police and the systemic lack of treatment for black infants and mothers. Their mortality rates are off the charts.