I have no idea.
It appears his hypothesis was:
“Since Lenin and Marx were Jewish (a false statement, as they were Russian Orthodox and Lutheran, respectively), modern leftist must like Jews.”
Aside from the factually-incorrect basis (e.g., neither being Jewish), the basis of the hypothesis seems to be a mismash of:
1. Protocols of Elders of Zion (a Russian forgery which claimed Jews were behind communism)
2. The Mein Kampf, which admitted the Protocols were a fake, but nonetheless embraced them as true in principle
3. Historical ignorance of the fact that leftists (from communist to fascists) have always hated Jewish people.
4. The accident of history whereby European/Russian nationalists hated Jews MORE than leftists hated Jews (and used them as scapegoats), which forced Jews into the leftist camp by default.
The results of 1-4 are idiot posters on FreeRepublic who say things like “Jews voted for Hitler because he was a Democrat!”
However, I know we can all agree, the only important thing concerning Lenin is that he is dead. As we used to proudly pronounce in this country, “ The only good Communist, is a dead Communist”
Cheers :)