You better check your history friend...Stalin was trained by the Catholics who had been killing for hundreds of years before these communist came around...and they killed Christians...the blood that the scriptures declare is evidence of satans throne.
Read the scriptures first. Some prophets also killed, but they had been glorified by God for that. Paul also burnt alive sinners, still he is a founder of churches.
Satan kills his victims for sake of purely satanic antichristian idea - like communist global atheist movement was.
Roman church never declared idea satanic ideology, and never was wholly subdued to whatsoever state.
Rome is destined to be last fortress of christianity, since Jesuse gave such prediction to Peter (first bishop of Rome) that the gates of hell shall not prevail against it (Mathew 16:18).
Slandering Roman church you do follow satanic will.
Because Catholics who worship Trinity as God and Jesus as Deity, still are christians.
While many protestants (who doubt if Trinity is God, and reject Divine nature of Jesus) are not christians at all!!!