Self hating Jews Atheists Marxist. These word combinations are difficult to comprehend. Sort of like humanized pretzeling of incoherent insanity. And there are a whole bunch of them around. Sometimes I think that the term Never Again leads a Jewish person to be a Marxist in order to be a friend of the Marxist who wants to kill Jews. The non- Jewish Marxist will (supposedly) not kill a Jew if the Jew is a Marxist. Comprehending insanity is not an exact science. I may or may not have insight concerning self-loathing Atheist Marxist Jews.
I noticed an interesting Historical fact one day. The ancient culture of Edom were virulent Jew Haters and lived just over the Jordan river. Haman was from those bloodlines.
When Rome took over Israel they drove all the Edomites into Israel and the Edomites were merged with the Jews. Edom as a separate people ceased to exist.
When the Jews were driven from Israel there is no record of Edomites, everyone claimed to be Jews.
Could it be when the Bible speaks of those who claim to be Jews but are not, that it is speaking of Edomites? The leftist self hating Jews may simply be the remnants of the Edomites who were dispersed into the Diaspora alongside the real Jews.