The Jews embraced socialism and they also embraced Communism. There was a long history of conflict between Poles and Jews in Poland. Before 1939 Poland was ruled by a dictator that pursued strongly anti-Jewish policies. It is only logical that the Jews there would have collaborated with the Soviets, expecially given the appeal that Communism apparently had for Jews at the time.
I do not want to debate the issue of anti-Semitism in Europe or Eastern Europe. The history goes much farther than the dictator in Poland that you mentioned. Anti-Semitism there has a long, long tradition.
That history is not one-sided, however. I believe that before the Holocaust, 10% of Poles where Jewish. During the Holocaust, literally thousands of Catolics risked their lives to hide their Jewish fellow citizens. Many have died doing so. It is an insult to them to talk about the animosity between the "Poles and the Jews."
The Jews have embraces socialist and communism precisely because for the first time in European history someone promised them equality and the ability to get outside the Pal of Settlement in the Russian Empire. Of course, like all other promises, this was kept only briefly: even the atheist commies when beating a Jew in 1970s Russia or Ukraine would tell him that he was the "Christ-killer."
Which explains to my original remark: in all times, then-current problems in Europe were blamed on the Jews. In our times, it is socialism and communism; so it is popular in Russia, I hear, to say that it was "the Jews who imposed the revolution on the Russians." Similarly, in Poland it was the Jews who collaborated more than Catholics with the Russians.
These topics are very important today in Eastern Europe, so this is why you hear them. A few hundred years ago, it was the Jews who drank all the water during the draught. They were blamed for the Plague.
There is nothing new in these arguments. Their form is the same: they all something semingly true (the Jews indeed embraced communism en masse), but make a wrong attribution or distort the facts.
Again, I am giving you a courtesy of reply in response to your polite and considerate post. But I would much prefer not to start a debate on this issue; it is unrelated to the thread.
Thank you for writing.