This had nothing to do with the ethnic origin, but something in the ballpark.

once someone (in US) asked me "So they dont take US Dollars there?"
refering to some country I had just visited. I said "NO"
and the person goes.... "how do people buy stuff there?"
I said "they have their own money"

i swear he was not kidding. He was shocked that there are other
currencies in this world.

I showed em some currencies from about 6-7 countries and his jaws
dropped.