The Root Cause of Anti-Semitism

I read a story today of which the following is a brief snippet:
Emmy-award winning comedienne Roseanne Barr, herself of Jewish ancestry, has nonetheless blasted Israel for its recent attacks on Hamas targets in the Gaza Strip, calling Israel a "Nazi state" bent on torturing "the Jewish soul."
"The destruction of the Jews in Israel has been assured with this inhuman attack on civilians in Gaza," Barr writes on her blog. "Exactly as its Nazi mentors did to the Jews of Warsaw, Israel now bombs innocent civilians who have been imprisoned in concentration camps in Gaza!" She continues, "The Zionists look German! The Palestinians look like the Jews of Poland! The Jewish people have destroyed themselves in Gaza."...
Two years ago, Barr explained, "The Arabs do not invade other countries. The Israelis do. I am sick of Israel and I am sick of Zionists. They are propped up by evangelical Christians who cannot wait for the Arabs to kill them so that their genocidal war god whom they misname Jesus can come back."...
Barr declares, "Remove Israel's influence from American government! Their occupation of and brutality against their neighbors is the real reason we were attacked on 9-11!"
from: www.worldnetdaily.com
What causes such hatred toward these people? Why can you find anti-semitism in every people group throughout the world and in every religion of the world including Christianity (ie Mel Gibson)? And why has this hatred existed in every generation for 1000's of years?
As a theologian, I will present the following reason: Satan hates the Jewish people and wants them dead. Let me explain:
To the father of the Jewish people, Abraham, God made this promise in Genesis 18:18:
"Abraham will surely become a great and powerful nation, and all nations on earth will be blessed through him."
What does this mean? First of all, it means that God was going to use the Jewish people to show the world who the real God is so that the whole world might come to know Him and be blessed by Him.
Secondly, and even more importantly, the Messiah or Savior would come through the line of Abraham. Millions of people would be ripped from satan's kingdom and brought into eternal life when Yeshua Ben Yosef--or better known to westerners as Jesus son of Joseph--would come through Abraham's line and take the world's sins on Himself and die on a cross.
Most anguishing of all to satan is this: When Yeshua Ben Yosef comes again to destroy satan forever, it is prophecied He will come back in a Jewish-inhabited Israel on the Mount of Olives (Zechariah 14:4 & Acts 1:11). Satan will do all he can to stop this inevitable event from happening.
So, the next time you here an overly harsh or critical statement against Israel or the Jewish people, or the next time you find an anti-semitic word popping out of your own mouth, remember from where it came and ask God to give you a new heart for His people.