and established rural communes in Israel called "kibbutzim". The kibbutz began as a variation on a "national farm" scheme, a form of cooperative agriculture where the Jewish National Fund hired Jewish workers under trained supervision. The kibbutzim were a symbol of the Second Aliyah in that they put great emphasis on communalism and egalitarianism, representing Utopian socialism to a certain extent. Furthermore, they stressed self-sufficiency, which became an essential aspect of Labor Zionism. Though socialist Zionism draws its inspiration and is philosophically founded on the fundamental values and spirituality of Judaism, its progressive expression of that Judaism has often fostered an antagonistic relationship with Orthodox Judaism. Labor Zionism became the dominant force in the political and economic life of the Yishuv during the British Mandate of Palestine and was the dominant ideology of the political establishment in Israel until the 1977 election when the Israeli Labor Party was defeated. The Israeli Labor Party continues the tradition, although the most popular party in the kibbutzim is Meretz. Labor Zionism's main institution is the Histadrut (general organisation of labor unions), which began by providing strikebreakers against a Palestinian worker's strike in 1920 and until 1970s was the largest employer in Israel after the Israeli government. Liberal Zionism General Zionism (or Liberal Zionism) was initially the dominant trend within the Zionist movement from the First Zionist Congress in 1897 until after the First World War. General Zionists identified with the liberal European middle class to which many Zionist leaders such as Herzl and Chaim Weizmann aspired. Liberal Zionism, although not associated with any single party in modern Israel, remains a strong trend in Israeli politics advocating free market principles, democracy and adherence to human rights. Their political arm was one of the ancestors of the modern-day Likud. Kadima, the main centrist party during the 2000s that split from Likud and is now defunct, however, did identify with many of the fundamental policies of Liberal Zionist ideology, advocating among other things the need for Palestinian statehood in order to form a more democratic society in Israel, affirming the free market, and calling for equal rights for Arab citizens of Israel. In 2013, Ari Shavit suggested that the success of the then-new Yesh Atid party (representing secular, middle-class interests) embodied the success of "the new General Zionists." Dror Zeigerman writes that the traditional positions of the General Zionists—"liberal positions based on social justice, on law