@garland, true. However, it is also the case that people in US, Canadian and UK universities, for example, use anti-Zionist assertions to mask anti-Semitism. For example, a Jewish student at McGill was blocked from becoming a member of the student government because of his affiliation with Jewish organizations including those that opposed the BDS (Boycott, Divestment, Sanctions) movement that anti-Zionist students were trying to get McGill to endorse. In the process of trying to block him from taking his position, these anti-Zionist students sent out anti-Semitic leaflets attacking that student and two others. The university did an investigation that concluded that the student was kicked out because he supported Israel and opposed BDS and not because he was Jewish but that he was targeted by anti-Semitic literature. [Interesting to speculate given the excessively politically correct environment of Canadian universities about what would happen at McGill if someone were kicked off the student government for supporting BDS or opposing Israel]. The leaders of the Labour Party in the UK wrap their anti-Semitism in anti-Zionist garb but every once in a while the anti-Semitism slips out despite the camouflage.
I think the problem is slightly subtler. As an American Jew, I oppose much of what the current Israeli government is doing. However, I think it is necessary to have a Jewish state because the anti-Semitism that led to the Holocaust, with significant support from many in Western and Eastern Europe is muted but not gone. Similarly, some American leaders seem more than happy to legitimize otherwise latent or suppressed anti-Semitism in the US. So I can oppose many actions of the Israeli government (like expanding settlement) and still think that a version of Zionism (a movement that supports the creation and protection of a Jewish state) is necessary. @garland, do the Jewish people you are referring to oppose the establishment and protection of a Jewish state? Or do they just oppose some of the actions and the current direction of the Netanyahu government?