I say this because here we have this too, as in any other part in the world, the only difference is that the targets are others.
Remember the obsession of those folks to measure and document people turning this into some sort of science where you could classify people objectively giving some properties drawing hard lines that would not be crossed. Once they defined what was the superior type it would be a matter of marginalize and eliminate the weaker to achieve the super race.
We all still do this here and there, but is much more organic, subtle and disguised as something else.
Anyway is funny to think that in US (and Brazil), the last wave of immigrants arriving were considered the low people and only with subsequent waves of immigrants the old "dirty ones" got some sort of social upgrade.
As irish in the US were marginalized and later the jews, polish and italians replace them as people with less value.
Here for instance, japaneses and italians were treated pretty badly in the beginning of the 20th century. (It was even worse for black people).
Its funny to see how people don't learn with history. There's no nobility by birth, at most it was the parents passing education and culture to their children. Leave a human alone in the forest and if he manage to survive it will behave like an animal.
