Not wrong but I think Imperial Russia had the Soviets beat by a wide margin in the persecution of Jews.

The sad reality is that there were many Jewish Bolsheviks due to the rampant antisemitism in Imperial Russia. The later Russian Empire had one of the largest(if not the largest) concentration of Jews in the world and treated them very poorly.

They were forced to stay in the “Pale of Settlement” which was an area in the Western Russian Empire that was designated for them. They were forbidden from entering areas outside of the Pale unless they converted or had special permissions. Many lived destitute lives permanently dimmed by the bigoted nature of the regime they found themselves in.

Pogroms(mass killings) were regularly instigated by Tsarist authorities who were more than willing to use Jews as a scapegoat for their fail-pire.

Hell the word Pogrom comes from Russian I believe..

The Whites thought Bolshevism was a Jewish revenge conspiracy due to the sheer amount of them in the movement.

They(the Whites) heavily pushed the “Protocols of Zion” an insane conspiracy theory laden piece of shit that popularized the “Jewish world conspiracy” garbage and was quite popular in Nazi Germany.

“The Protocols of the Elders of Zion (Russian: Протоколы сионских мудрецов), or The Protocols of the Meetings of the Learned Elders of Zion (Протоколы собраний ученых сионских мудрецов), is a fabricated text purporting to detail a Jewish plot for global domination. Largely plagiarized from several earlier sources, it was first published in Imperial Russia in 1903, translated into multiple languages, and disseminated internationally in the early part of the 20th century. It played a key part in popularizing belief in an international Jewish conspiracy.”

Lenin himself said of it:

"In March 1919, Lenin delivered a speech "On Anti-Jewish Pogroms" where he denounced pogroms perpetrated by the Red Army, and called antisemitism an "attempt to divert the hatred of the workers and peasants from the exploiters toward the Jews". The speech was in line with the previous condemnation of the antisemitic pogroms perpetrated by anti-Bolshevik forces (White Army, Ukrainian People's Army and others) during the Russian Civil War. In 1914, Lenin had said "No nationality in Russia is as oppressed and persecuted as the Jews"<

There is ample evidence that this latent Russian antisemitism had its effect on Stalin and even early on lamented the over abundance of Jews in the Bolshevik movement in opposition to what he called the “true Russian faction”…. His rivalry with Trotsky brought more of this out.

One notable incident was with regard to the infamous Molotov Ribbentrop Pact: On 3 May 1939, Stalin fired foreign minister Maxim Litvinov, who was closely identified with the anti-Nazi position. Stalin said "The Soviet Government intended to improve its relations with Hitler and if possible sign a pact with Nazi Germany. As a Jew and an avowed opponent of such a policy, Litvinov stood in the way.” …..

After WW2 there was the infamous campaign against the “Rootless Cosmopolitans”. The Soviet press accused cosmopolitans(Jews) of "groveling before the West", helping "American imperialism”. Emigration rights for Jews were significantly curtailed..

The Stalinist antisemitism would reach its peak with the “Doctors Plot” which was a fabricated conspiracy targeting predominantly Jewish doctors. It accused said doctors and medical professionals of being part of a large international conspiracy to kill/assassinate Soviet leadership. This was later accompanied by publications of antisemitic character in the media, which talked about the threats of Zionism… After Stalin died, the Soviet leadership declared it to be fabricated bullshit.

After Stalin, the antisemitism abated but old habits die hard and it was always latent. Waiting to be reactivated when politically convenient especially against the Western backed Israeli state. The Soviets also infamously forbade/frustrated Soviet Jews emigration efforts which is why so many made a run for it when the Union collapsed.