Judaism
Around the 1st century CE, there were several small Jewish sects: the Pharisees, Sadducees, Zealots, Essenes, and Christians. After the destruction of the Second Temple in 70 CE, these sects vanished. Christianity survived, but by breaking with Judaism and becoming a separate religion; the Pharisees survived but in the form of Rabbinic Judaism (today, known simply as "Judaism"). The Sadducees rejected the divine inspiration of the Prophets and the Writings, relying only on the Torah as divinely inspired. Consequently, a number of other core tenets of the Pharisees' belief system (which became the basis for modern Judaism), were also dismissed by the Sadducees. (The Samaritans practiced a similar religion, which is traditionally considered separate from Judaism.)
Anti-Zionism
Jewish anti-Zionism is as old as Zionism itself, and enjoyed widespread support in the Jewish community until World War II. The Jewish community is not a single united group and responses vary both among and within Jewish groups. One of the principal divisions is that between secular Jews and religious Jews. The reasons for secular opposition to the Zionist movement are very different from those of religious Jews. Opposition to a Jewish state has changed over time and has taken on a diverse spectrum of religious, ethical and political positions.