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They are overtly anti Israel as evidenced by their boycott. Many Marxist organizations do, Marx being a prominent antisemite. The USSR most prominently. It's fair to note that in places like China, Vietnam and Cambodia, and even Cuba, Jews weren't persecuted any worse than other capitalists or academics. I know, the DSA will do it a different way, Make Marx Great Again will be their motto.
I’m going to guess there will be a lot of Jews who would rather stay with anti-Jewish socialists, than get on the Trump wagon.
Yes, there exists anti Semitic Jews such as Marx, Sanders and Soros. The Jewish apparatchiks sitting around Lenin (6 out of his 13 sorts of czars) were also anti Semitic leftist Jews.
However Salazar is a peculiar kind of antisemites, the kind that organizes the Mexican illegals who are extremely racist and are currently reviving the KKK in America that was dying,
Let us not forget that German Ace Hartmann who spent time in Soviet camps and never apologized for his aerial victories to the Soviets spoke about those vicious Nazi aparatchik of Hitler who no sooner entered the camps started praising the genocide of Stalin and snitching on Germans not repenting and attempting to escape the camps.
These Nazis who faked repented into the next genocidal methods of Stalin were called ANTIFAs. The same Soviet program of converting quickly the worst of Nazi thugs as best friends of Stalin is exactly how Alinsky converted the KKK democrat to Stalinist thugs in fake Clinton like repent.
There was never a switch of the KKK Democrats to Republican, the switch was to stalinist antisemitism