Jews Against Israel
" . . .'the underlying cause of strife and bloodshed in the Middle East, namely the state known as Israel, [should] be totally and peacefully dissolved'. "
Rabbi Aharon Cohen
Yes, there are anti-Zionist Jews. They are such anti-Zionists that they will show up in Iran and participate in President Ahmedinajad's Holocaust Conference. They don't question that the Jewish holocaust took place, but that it has been used as a "tool of commercial, military and media power". Ouch! Sounds like they read The Holocaust Industry by Norman Finkelstein. If you haven't read this or other Finkelstein works, you should.
Of course, I don't deny that the Jewish holocaust happened, I do deny that it gives Israel the right to commit a holocaust against the people of Iran. Unfortunately, inviting David Duke to a conference is not a way to win friends or influence people. It makes it easy for stupid and/or blood thirsty Americans to advocate killing.