Zionism is an ideology and a political movement. As such it is open to rational dispute. Jews, like others, might view the Jewish claim to Palestine as irrational, anachronistic, and intrinsically unjust. They might consider the Jewish state to be discriminatory or racist or might object - on political, philosophical, or even specifically Jewish grounds - to any state based on the supremacy of a particular religious or ethnic group. As Jews, they might reject the idea that Jewish people constitute a "nation", or at least a "nation" of the type that can or should become a territorial nation-state. Or they might have concluded on the basis of an examination of Israel's treatment of the Palestinians that the underlying cause of the conflict was the ideology of the Israeli state.
http://www.guardian.co.uk/world/2008/ma ... okextracts
Itself an extract from a book.