No, his hatred of Jews had quite the Christian beginnings. He was simply continuing a centuries-old Christian tradition. He was, however, much more efficient than his previous Christian brethren.
And Kaganovitch slaughtered 7 million Ukrainians because of his hatred of Christians. Slansky helped turn Czechoslovakia into a slave labor camp because he too hated Christians. Rosa Schwartz, the sexual sadist who operated out of Kiev tortured thousands of Christians to death. Marx's real motive for his theories was to destroy Christianity. Trotsky wanted international communism in order to eliminate the bourgeois (a code name for Christian). The Rosenburgs gave the A-Bomb to the Soviets because they wanted Christian civilization wiped off the map. From 1917 on, the CHEKA, NKVD, Statsi, Polish Secret Service and other communist agencies found good recruiting grounds in those whose faith was anti Christian. One former communist mass murderer from Estonia is now hiding out in Israel because that government refuses to extradite him to face crimes against humanity
You want to blame Hitler on Christians? Explain why 150,000 Mischlinge served in the Wehrmacht and Kreigsmarine.
I would prefer to view people as individuals whose acts reflect on themselves but if you insist on playing identity politics and a faith over one billion people find solace in, there is lots more dirt to throw.