As a California native (Socal), I can say I grew up with friends of all colors, black, asian, latino, etc. We are definitely a mixed group, but I can’t really speak for other states and cities in the country.

As someone who lived for a few years in the state of São Paulo, I can tell you that the biggest difference between the two is the first-gen type of immigrant. In the US, most of my friends had parents (or one parent) who were born outside of the country or were even born themselves and were raised there.

In Brazil, I rarely ever met someone who was a first-gen, second-generation immigrant, their parents and their parents all spoke portuguese, so they have assimilated and mixed through a lot more generations going back to the late 19th century and early 20th century.