Bolshevism was the Evil Ones' second greatest invention, after Mohammedism. The Bolsheviks were avowed atheists, determined to eradicate the Russian Orthodox Church, and to infiltrate and use the outward forms of the Church to serve the ends of the Godless Soviet state.
Mohammedism is just an imitation of Judaism (i.e. Phariseeism). Judaism is the Mother of Harlotry and Abominations of the Earth. Arianism, Sabellianism, Eunomianism, Apollinarianism, Manichaeanism, Marcionism, Nestorianism, Mohammedism, Iconoclasm, etc. are all Judaic heresies.
"All heretics are one with the Jews in blasphemies" (St. Jerome)
The Bolsheviks were decidedly Jewish, not atheist. Although since Jews in a sense are atheists, it is not altogether incorrect to call the Bolsheviks atheists -- Jewish atheists.
Bishop Nicholai Velimirovic: Addresses to the Serbian People-Through the Prison Window
"Europe is presently the main battlefield of the Jew and his father, the devil, against the heavenly Father and his only begotten Son… [Jews] first need to become legally equal with Christians in order to repress Christianity next, turn Christians into atheist, and step on their necks. All the modern European slogans have been made up by Jews, the crucifiers of Christ: democracy, strikes, socialism, atheism, tolerance of all religions, pacifism, universal revolution, capitalism and communism… All this has been done with the intention to eliminate Christ… You should think about this, my Serbian brethren, and correspondingly correct your thoughts, desires and acts."