[reissbaker]

I am simply disputing the original claim that "anti-Semitism as we know today is very much rooted in racial science (well, "science") of the 19th century. Before that it was an anti-religious thing: anti-Judaism, which was a markedly different and similar to Anti-Catholicism, anti-Protestantism, and things like that."

Antisemitism predates the 19th century, and not all hatred of Jews prior to the 19th century was "similar to Anti-Catholicism, anti-Protestantism, and things like that." While there is a term "anti-Judaism" used by historians to describe religious strife similar to anti-Catholicism, the term "antisemitism" isn't limited to the 19th century and later, and not all hatred and oppression of Jews prior to the 19th century was simply anti-Judaism.

For example, during the Black Death, Jews were blamed for outbreaks and were mass-murdered, with no attempts at conversion at all. https://en.wikipedia.org/wiki/Persecution_of_Jews_during_the...