And then, since compound interest is one of the most powerful forces in the universe, once the Jewish population became wealthy after decades of compounding interest, then they were villainized because they had money and money meant resources to be plundered.

If you're a Christian, the best way to plunder somebody of a different religion is to remind all of your Christian followers that they are of a different religion, and then you have the ethical and moral responsibility to alleviate them of their material possessions in order to save their eternal souls, or failing that to at least bolster the kingdom of God.