Indeed, Jesus himself was a Jew, raised in the Jewish tradition in a land of Jews. The only other folks around other than Jews were the Roman occuppiers of the land. They, the Romans, are of course the ones who actually killed Jesus, although the "Temple" leaders turned him in to the authorities and egged them on.
In any event, they, the leaders of the Temple and the Romans, were really only playing their role in fulfilling Jesus' destiny. He knew what was going to happen before they even heard of Him, so it's hard to come down very hard on them at all. It had to take place in a Jewish land, for Jesus was after all, the fullfilment of Jewish tradition, He was the Messaih, so who else could he appear amoung, other than the Jews, and who else could condem him other than the Jews? The Romans could have been anybody though, there part was not really important, nor did it require any unique cultural or religious heritage.
Jesus was a JEW. Repeat: A JEW What on earth is the big deal on either side? He was a threat to the established Jewish and Roman order.
CHRISTIANS: As a rabbi threatening the system, he left himself open to enemies. Indeed he WANTED to die. It fulfilled his destiny. What would have happened if they DIDN'T kill him and instead gave him a job in the Temple with a nice golden pension? Would everyone be happier. This whole thing is so silly..,how can Christians be mad at Christ's "killers" when the Lord died for their sins, and himself said to "turn the other cheek"?
JEWS: And how can Jews deny the truth that their leaders at that time wanted Jesus out of the picture since he threatened their corrupt rule. E ven without the Jesus episode, the Jewish leaders had so led their people astray that they would all be scattered to the far winds within 2 generations afterwards regardless. These are the people Abe Foxman wants to defend? If you are idealistic you'd better have soldiers who can back you up. The Jews failed disastrously in this during the Bar Kochba uprising. Other nations were far more clever, working within the Roman system to get what they wanted, and eventually had their own nationhood when Rome finally fell. So it could have been with the Jews in the Holy Land had they not overreached so foolishly.