Whenever someone implies that anti-Semitism isn’t racism, I point out that it’s one of the few examples of discrimination that really is racism (unlike, for example, the invented thoughtcrime “Islamophobia”1 ) because the Ashkenazi Jewish population is as close as you can get scientifically to the common (and deeply flawed) notion of what a “race” is.

Adam Woolfe, who did his PhD at the HGMP-RC before it closed down, drew my attention to this paper in Genome Biology, “A genome-wide genetic signature of Jewish ancestry perfectly separates individuals with and without full Jewish ancestry in a large random sample of European Americans“, that shows this more rigorously:


It was recently shown that the genetic distinction between self-identified Ashkenazi Jewish and non-Jewish individuals is a prominent component of genome-wide patterns of genetic variation in European Americans. No study however has yet assessed how accurately self-identified (Ashkenazi) Jewish ancestry can be inferred from genomic information, nor whether the degree of Jewish ancestry can be inferred among individuals with fewer than four Jewish grandparents.


Using a principal components analysis, we found that the individuals with full Jewish ancestry formed a clearly distinct cluster from those individuals with no Jewish ancestry. Using the position on the first principal component axis, every single individual with self-reported full Jewish ancestry had a higher score than any individual with no Jewish ancestry.

  1. Many who use the word “Islamophobia” are, however, actual racists because they lump together multitudes of human individuals and assign to them both an inaccurate label and a set of presumed characteristics and/or grievances. []