Criticising the actions of the Israeli state = not anti-Semitism (or anti-Zionism)
Denying the Jews' right to self-determination = anti-Semitism (unless you are one of the very few who truly believes in no nations/borders/governments approach, in which case, this position is consistent with your beliefs,and you also object to self-determination for Kurds, Sawaharis, Scots, Somalilanders etc) and anti-Zionism
If you hold Israel to a different set of standards to any other nation state, you might want to examine your own motivations for this, though it doesn't make you automatically anti-Semitic.
Someone upthread mentioned Amos Oz, may his memory be a blessing. My two favourite quotes from him- (both from "Israel, Palestine and Peace"
In the 30s French graffiti read, "Jews, go to Palestine!" Now it says, "Jews, leave Palestine!" Why can't Europeans make their minds up?
And:
The trouble with Europeans, they see us Ashkenazim in Israel, and they think we're European, just like them. They forget we're a Middle Eastern state, in the Middle East.
Also - upthread someone talks about NW Jews who understand "love thy neighbour": that's Christian theology, and nothing at all to do with Torah.