Oh really, Moreno? You think that the Iranians, Syrians, Lybians, etc. also want to kill Israelis for revenge? How many of them have been killed by Israelis (without deserving it)?
I think that it is a matter of a demonic, irrational, blind HATRED for the Jew.
And yes, per JonR, it goes back to the time of Christ.
Just an observation...