Is that so? Why?
Yes, it's so. For years and years the Arab chrstians of Nazareth kept that city under a Communist mayor.
Like Jews in chrstendom, chrstians in the moslem Middle East are vulnerable to alienation, which leads to both utopian universalism and the need to prove one's loyalty to the culture one feels alienated from (ie, liberal Jews' placing the Bill of Rights above Torah, Arab chrstians being more anti-Israel and more PLO than Arab moslems).
Contrary to the apparently ineradicable fantasy that exists in the minds of so many people (and always has), Communism is not "Zionist." From the very beginning of the Bolshevik Revolution Zionism was outlawed in Communist Russia (the only exception being a few years in the late Forties when the Communist bloc temporarily supported the creation of Israel as part of the then party line against the British Empire). Even in Israel, all the Communist parties--even those made up of Jews--were anti-Zionist, including the original "Palestine Communist Party." You know . . . Jewish Communists settling in Israel to fight Zionism doesn't exactly make a lot of sense.