I'm one of the immigrant groups people don't seem to like very much these days, but even I recognize some degree of ethnonationalism or desire to restrict immigration is NOT bigotry. I can empathize how jarring it must be to begin to feel like a minority in your own country - even if they aren't minorities nationally, they may be in local urban pockets. Unfettered immigration IS causing problems in many places, is often supported by businesses looking for cheap labor and it's absolutely reasonable to be opposed to it.

Moreover, the false equivalence you're drawing between opposition to immigration and bigotry is part of what let the problem fester in the first place. I think people should be allowed to oppose immigration without being called racist, its not the same thing. The open bigotry and racism by the right in many countries is partly a reaction to this false equivalence. They saw immigration in some cases as causing social disorder, as a tool to suppress wages, as causing increased crime etc. and they were forcefed a message of "all immigration is good and any opposition is racist" to reasonable objections. No one is obligated to accept every person who wants to come in.