Immigration implicates economic and cultural issues, trying to reframe them as being about "hate" or "fear" is misdirection. When you see second and third generation immigrants waving foreign flags in western countries, you should realize that, even if you don't believe in nationalism, the immigrants themselves often do.

Similarly, dismissing the concerns as "short sighted" is just ignorant of history. Plato was thinking about the challenges of reconciling immigration with democracy 2,000 years ago. Alexander Hamilton presaged the destabilizing effects of immigration on democracy at the inception of the U.S. https://www.iwp.edu/articles/2016/12/21/hamiltons-actual-vie...