re: #8 Sergey Romanov

That’s an old one.

Here’s a frame from the Nazi pseudo-documentary Der Ewige Jude (decades later repeated in the banned Soviet pseudo-documentary Skrytoye i yavnoye):

BTW, gotta write about that some time. It’s a hoot- a Soviet documentary which plagiarizes the Nazi agitprop, and even surpasses it at times, all under the mask of anti-Zionism, so abrasive that even the Soviet officials understood it’s antisemitic and banned it.