Going last to first: Words signification change with use: e.g. Norteamericano has become a polite synonym for gringo, but isn't Mexico part of North America? Still, you wouldn't use it to signify a Mexican.
Antisemitism todays signifies Jew hatred, or at the very least adoption of a negative stereotypes regarding Jews (of which influence in Hollywood isn't included because we did found it, after all).
Zionism proposed the necessity of a homeland over which Jews had political sovereignty. If pre-war pogroms, the Holocaust & post-war indifference to the plight of refugees didn't demonstrate decisively this need, then nothing will, & one must conclude that longterm survival of the Jewish people is neither necessary or desirable.
The Jews were given a portion of Palestine by the UN in much the same way far off effendis sold lands in Palestine to Jewish settlers without reference to the Arab workers, families & clans that had worked them for generations. Up to that point I don't think you can say Jews stole Arab land, while at the same time the Palestinian objection to having their lands taken is perfectly reasonable. Quite a paradox.
Unfortunately since its founding a kind of Israelism has overtaken Zionism. This obsession with security & fulfilling an alleged biblical tradition has betrayed Zionism, all the while making Israel less secure.