From Wikipedia, the free encyclopedia

Anti-Judaism is the "total or partial opposition to Judaism—and to Jews as adherents of it—by persons who accept a competing system of beliefs and practices and consider certain genuine Judaic beliefs and practices as inferior."
 
Anti-Judaism, as a rejection of a particular way of thinking about God, is distinct from antisemitism, which is more akin to a form of racism. Scholars wishing to blur the line between theology and racism have since coined the term religious antisemitism.

Nevertheless, the concept of Judaism has been challenged over the past two thousand years by scholars of both Christendom and Islam.

Pre-Christian Roman Empire