First off, they don’t really hate Jesus; they hate the way He has been portrayed.
Let’s go to the Wayback machine, Sherman. In the first century, there were 2 theologies: you were either Jewish, or you were a Pagan. That’s it- no church, no masque, just Jew or Pagan. Then along comes Yeshua (Jesus), and after that there were 4 theologies: Jews who did not believe He was the Messiah, Jews who did, Pagans who accepted Him (and, believe it or not, by doing so were becoming Jewish), and those Pagans, again. So for the first 300 years or so after Yeshua, Gentiles who accepted Him as the Messiah were being slowly converted to Judaism. I say slowly because, as shown in Acts and discussed in Romans (a very, very misunderstood book) the typical restrictions of diet and activity that the Jewish people were used to was not so strictly enforced on the Gentile Believers so as to make their transition to Judaism easier.
Now we move to the Council of Nicene, Constantine, and the beginning of a tremendous schism between Jews and “Christians”. There were no Jews at the Council, and the writings were being collected into a “Christian” bible that had many undertones of antisemitism. One cultural reason is that the Jewish population had been more and more revolting (pardon the pun) to the Roman government, and being Jewish was becoming less and less popular, so the loose restrictions on Gentile Believers became more like, “Forget all that ‘Jewish’ stuff and let’s not be associated with them.” Basically, Jews had been Okedokee and “Christians” bad news to the Romans, but now it was reversed. Thus, I believe, the beginning of the “Jesus hates the Jews” philosophy.
Moving along in history, we had the Crusades, where tens of thousands of Jews (not just Muslims) were told, “Convert, or die!” Then the Inquisition, Martin Luther first loving the Jews, but when they did not go along with his ideas, he turned on them and called them the spawn of the Devil and said all their books should be burned (i.e., destroy the Torah), the Holocaust (Nazi uniforms had the words, “Gott mitt uns”, or “God is with us” on their belt buckle), the Gentleman’s Agreement during that time when America turned away Jews trying to escape Nazi Germany, the Pogroms in Russia, etc. etc. etc..
When you think about all that has been done to Jews in the “name of Jesus”, it’s not hard to understand why Jews don’t like Jesus.
Next post: Did Jesus really start a new religion?