Let us repeat, again, that a staggering 50% of the Russian revolutionary party rolls were Jewish.

In a not substantiated claim, yes.

There is no Jewish defection or displacement from the revolutionary movement until Stalin excised Trotsky and other intellectuals

Partly true, but the 'revolutionary movement' was not just the Bolsheviks. There were also the Mensheviks (actually led by a Jew) and the Socialist Revolutionaries, who were divided internally between minimalists and maximalists.

so in 1918 the number of participants, at the minimum, is the same in the Bolsheviks.

Why 'at a minimum'? When you can empirically verify the actual leadership of the Bolsheviks, why on earth would you go on an unsubstantiated claim of a government official which is not even about the leadership?

For example, a survey in the 80s found that Jews are 60% of Hollywood decisionmakers

I am not sure what an unnamed study about Hollywood teaches us about the Bolsheviks from 2 generations earlier in a completely different country. For one, it's a very insulting comparison to the Bolsheviks - they weren't pedos and cocaine users.

You can't swat this aside, sorry. The fact that you even tried is laughable.

Actually, it's laughable that you made a claim about one thing and tried to prove it with something completely different (if unsubstantiated), and then dragged in Hollywood degenerates.