cnn.com/2019/12/30/opinions/new-york-antisemitism-is-a-warning-ghitis/index.html
Many of the worst anti-Semitic attacks in recent months and years have been perpetrated by white supremacists, others by Islamist extremists, and several of the recent ones in the New York area by African Americans (including one that expressed interest in the Black Hebrew Israelite movement). Some attackers don’t fit any clear category, other than wanting to massacre Jews. The supposed explanations for these heinous actions often fall into pre-existing slots: white nationalism, refugee and migrant flows, radical Islam, even socio-economic conditions. Across the world, anti-Semitic incidents are sometimes explained or even try to be justified as a reaction to the plight of Palestinians, to racism, or the result of migration from Muslim countries.