This reminds me of a childhood thought I had.
Pardon if it rambles off topic.
But I grew up in NYC.
I always found it amazing, even to this day, how if you walk 2 blocks out of little Italy, how the faces would change from white to Chinese (Chinatown is literally blocks away)
I do not mind ethnic enclaves, just watch where you eat.

I got asked to leave a place in Chinatown because I was disturbing the customers with my whiteness. They implied my food would not be as good, and perhaps I could find another place. Though my soda was free.
That is where I learned what gwailo meant.
I went back to Mulberry street and ate at Umbertos instead.