I had a post some years ago in soc.history.whar-if on socialism and the kibbutz movement:
***
Most of the early kibbutzim were affiliated with socialists of one kind or
another. In 1953, Noam Chomsky lived in Israel on HaZore'a kibbutz, whch
was a creation of the Marxist-Zionist group Hashomer Hatzair. (Hashomer
Hatzair was one of the groups that formed the MAPAM party, a party that in
the late 1940's and early 1950's was almost as pro-Soviet as the Israeli
Communist Party. About two-thirds of Hashomer Hatzair's members belonged
to the kibbutz federation Kibbutz Artzi--"National Kibbutz.") Chomsky
later wrote that he generally enjoyed his kibbutz experience, but one thing
he did not like was the politics of some of the people there: "There were
very interesting people there, but it was surreal in some ways. This was
1953, at the time of the Slansky trials in Czechoslovakia and the last
stages of Stalinist lunacy. These late Stalin purges had a strong anti-
Semitic element, but people there actually defended them. They even
defended the trial of a fellow kibbutz member who was an emissary of the
kibbutz movement there and was charged with being a spy, which they knew to
be false. Not all did, of course. Those who thought about these things --
many did not -- were orthodox Marxist-Leninists, and I could discern no
visible departure from a fairly rigid party line, though there may well
have been much that I never saw."
http://www.chomsky.info/books/reader01.htm
The man Chomsky is talking about was presumably Mordechai Oren,
http://en.wikipedia.org/wiki/Mordechai_Oren who "confessed" in Prague in
the usual manner: "Before I say anything about Slansky I want to say
something about myself. I was an active member Zionist organizations and
acted against the people's democracies . Also I was in contact with
espionage agencies and had to coordinate espionage activities, because
since 1934, I had also served as an agent for the British Secret Service .
Since 1945 my special missions were to conduct espionage operations against
the people's democracies, especially Poland, Hungary, Czechoslovakia,
Bulgaria, Romania and the East Germany. As part of the espionage I
continued my work for international Zionist organizations." Oren was
released from prison after the Twentieth Congress of the CPSU, returned to
Israel, repudiated his confession as the product of torture--and announced
that his political views were unchanged, he was still a pro-Soviet
socialist...
(Incidentally, in those days, left-wing and even pro-Soviet politics in
Israel did not necessarily equate to concessions to the Arabs on the
Palestinian question. For example, another component of MAPAM was Ahdut
Ha'avodah. The Kibbutz me'Uhad (United Kibbutz) federation of kibbutzim
was Ahdut Ha'avodah's social base. According to Joel Beinin, *Was the Red
Flag Flying There? Marxist Politics and the Arab Israeli-Conflict in Egypt
and Israel, 1948-1965*, p. 26, "Like the majority of labor Zionists, Ahdut
Ha'avodah did not recognize the national rights of Palestinian Arabs.
Instead it favored a socialist Jewish state in all of Palestine. Kibbutz
Me'uhad's leader, Yitzhak Tabenkin, even advocated 'transferring' the
Palestinian Arabs out of the country. Ahdut Ha'avodah opposed admitting
Arabs to the Histadrut [trade union federation], did not admit Arabs to its
own ranks, and later opposed MAPAM's admission of Arab members."
http://books.google.com/books?id=Se3h1y-aRX0C&pg=PA26 )
Of course I wouldn't want to portray the far-left politics of MAPAM as
typical of all kibbutzim. Many were affiliated with the more moderate
socialism of MAPAI. And there were also religious kibbutzim. Still, the
overwhelming orientation of the early kibbutz movement was socialist in one
form or another...
https://soc.history.what-if.narkive.com/LBKcVkXJ/leon-trotsky-testifies-to-huac-1940#post89