re: Why through out History is the Jew hated so much?

I think the very early church actually considered itself as a segment of Judaism, even after the death of Jesus, so I don't think it would be exactly accurate to say they resented the jews for it. They were trying to convert all of them to their version of it.

It was only after St. Paul and others had a lot more success converting gentiles to the faith than the early church had converting Jews that things started to go south.

Also, the Jews were in a major revolt, or a series of major revolts against Rome in the century or so after Jesus, and the Romans ended up breaking a lot of things and dispersing a lot of people. Then Rome ended up converting (a lot later) and the church took on a lot of the characteristics of the Roman state. This may have included an antipathy to the jews.