The biggest critics of Zionism are the Jews that didn't go. They're not all bad... In fact, I'd like to learn from them. They've maintained traditions - specifically symbolic meaning - that I think are key to understanding.... something. Antisemitism is dangerous not only because it can lead to violence, but also because it doesn't stop with the people calling themselves Jewish. Christians are a kind of Jew. I would argue that Christians are the true Jews, and Paul wrote some stuff that would support that - but of course, I understand that non-Christian Jews would disagree. So anyways, pointing out the false Jews has to be nuanced - the point is to course correct, not hurt people.