Martin Luther - an anti-Semite or a Jew?

Was Martin Luther an anti-Semite or a Jew pretending to be a Christian, just like George Bush?

Someone who out of the blue says "To be sure, I am not a Jew" is under suspicion, especially when he shortly before said he was a Christian:

WARNING: This is a Notorious Antisemitic Document!
On the Jews and Their Lies, 1543
Martin Luther (1483 - 1546)

I had made up my mind to write no more either about the Jews or against them. But since I learned that those miserable and accursed people do not cease to lure to themselves even us, that is, the Christians, I have published this little book.

If there were but a spark of reason or understanding in them, they would surely say to themselves: "O Lord God, something has gone wrong with us. Our misery is too great, too long, too severe; God has forgotten us!" etc. To be sure, I am not a Jew, but I really do not like to contemplate God's awful wrath toward this people...

- Bobby Fischer, a Jew pretending to be a Jew hater