Zionism is the belief the Jewish people deserve a place to call their own, similar to the belief the Italian people deserve a place to call their own. Antizionism is the belief the Jewish people don't deserve a place to call their own.
Had someone came up and said the Italian people don't deserve a place to call their own, would you not call them racist towards Italians?
Why not the same here?
You can be against the actions of the Israeli government (I definitely am), but saying it shouldn't exist is a whole other ballpark.
Source on that leaked paper please?