No. I am saying that every example I can think of where "Cultural dilution" or some such argument is used can be described as racism.
I guess if you redefine every instance of xenophobia or isolationism or tribalism as "racism", then yeah you won't be able to find any example that isn't racism. But then that's pretty much my point to begin with.
The two examples that spring to mind are the Yugoslav conflicts and the stereotypical English nationalist, and they are both usually described as racism. You have failed to give a counter example.
The typical "these people who are not from here" sentiment that has been prevalent since, I don't know, the dawns of time ? Are you going to chalk that up to racism too ?
We also have these funny laws in France, which require each radio to broadcast a certain percentage of songs to be french. Is that racist too ?
I mean, just ask your friends about "cultural appropriation". That's a concept which draws directly from the idea of not having a culture diluted (though amusingly, the same people who speak loudly about cultural appropriation will also say that defending culture is racism, go figure).
Oh, on a personal note : I'm quite attached to my own culture, and I really dislike the pervasiveness of US cultural influence that is, precisely, diluting it. I'd like the US culture to be a bit more
restricted to the US. How much racist is this ?
Ironically, one of the aspects that really annoy me in US culture is precisely this pathological obsession with races and making antything and everything about it.