I'm afraid you don't get my point. The chrstians we are talking about are not American Fundamentalist Protestants; they are the native Arab chrstians of the Middle East, mostly Catholic and Orthodox.
Also Communism in Israel doesn't concentrate on social issues; it is "national liberation" Communism, just like the PLO and other such groups.
Well, then they are probably not very good Roman Catholics, are they? I wonder what Pope JP II would have said about their affinity for communism?