Ah, we are all becoming what my mother used to describe as
Heinz 57 varieties. Race and ethnicity are happily becoming somewhat meaningless concepts in many of our actual lives. We are more defined by our values and education, our aspirations and view, than where we came from. Oh, having traditions from one background or another is lovely, but more and more, real people on the ground, as opposed to politicians and pontificators, working and playing together, creating a new melting pot that's working rather like the old. At least that's my optimistic view on a good day.
It hasn't been so many years since a friend of Milanese and Piedmontese origin was 86'd from a Neopolitan restaurant in New York because (based on his name being very obviously Milanese aristocracy), the waiter said as he threw down the bill, the man was a tedesco [German], which is a favorite Southern Italian insult for a Northerner.
Yes I share your optimistic view on a good day also. The only culture clash that ever happened was when my father almost fainted when my mother presented him with curried meatballs for dinner. AND SHE DIDN'T USE PORK.