Believe it or not, it is possible to live in a state that isn’t an ethnostate based around your race. I’d imagine that what will happen to them is the same thing as happens to the rest of us not living in an ethnostate. They will either learn to coexist with other ethnicities, or, if they don’t like the policies that the majority democratically enacts, they may decide to move.

“What will happen to men if we give women the vote?”