I understand why you’d think that because we’re all inundated with American culture no matter where we are in the western world. But that’s just not true. There are plenty of interesting groups who celebrate cultural identities not based on the country they live in.
A web search uncovered German-Brazilians and Italian-Argentines for me, I’m sure there are many many more.
No they don’t care. It’s why bike thieves are such assholes, there’s barely any money to be made off it at massive inconvenience for the bike owner but they do it because they know 99% no one comes after them.