I agree, and i take my words back if i have offended you in anyway. You just have to know that our problems is with the Zionists in particular, who used all what they could do to drive Jews from other places and push them into this state called Israel whether they like it or just been forced to do so. Of course, except those Jews who were already living there since ages with their Arab brothers and sisters.
See, here's another problem we have - a language barrier. I had a book once -
Among the Righteous: Lost Stories from the Holocaust's Long Reach into Arab Lands by Robert Satloff. While, primarily, it is about exactly what the title says, the stories of Sephardi Jews arrested and annihilated in the Holocaust (often forgotten by history due to the much larger Ashkenazi deathcount), and the Arabs who saved thousands of Jewish lives during that dark time.
In a tangent, though, during the book, Satloff (a Jewish-American neoconservative, who is one of the preeminant American scholars on the Arab World) speaks about a friend of his, an Egyptian Muslim (I cannot remember the name, even if he told it), who said, "It is not Israel or the Jews I am against, it's Zionists". He then goes into the absurdity of this statement in English. A "zionist" in normal English simply means someone who favors a Jewish homeland in the Land of Israel, and that's all it means to anyone who speaks English natively. A "zionist" in Arabic, however, if I remember correctly, means exactly what you intend it to mean - an anti-Arab or anti-Muslim bigot who sees European-Jewish culture as better than Middle Eastern.
The latter certainly does exist, and they do have power and influence in Israel (though not absolute power or overwhelming influence). But, in English, they're not called "zionists", they're called "bigots" and "racists", at least in the English-speaking Jewish-American community, or, in nicer terms, "Eurocentrists". And these are as denounced in the Jewish-American community as any Israeli is - the problem comes, therefore, when you say "I'm anti-zionist", meaning the Arabic sense of racism, and it feels like an attack to American Jews, most of them zionists in the English sense, of simple support for a Jewish homeland in Israel.