The least you can say is that it’s ironic. It also shows people who are impervious to reality. It also shows the kind cowardice that leads people fight the last war, while ignoring the current conflict.
David Bernstein comments on the great anti-Semitism panic of 2017 in the Washington Post:
The irony of all this is that if you talk privately to those who work in the Jewish organization world, many will confide that the greatest threat to the security of the American Jewish community is “changing demographics,” which is a euphemism for a growing population of Arab migrants to the United States. Anti-Semitism is rife in the Arab world, with over 80 percent of the public holding strongly anti-Semitic views in many countries. The issue of whether and to what extent the United States should expand refugee admissions is a complex one, and a potential rise in (potentially violent) anti-Semitism, at least in the short term until refugees and their families assimilate, is hardly the only factor to be considered. But it’s surely a paradox that the groups and individuals who express the most public fear of potential anti-Semitism emanating from the Trump administration express little if any concern about the potential problems of admitting an untold number of refugees and immigrants from countries where extreme anti-Semitic sentiments are mundane.