RAMA--since you provided a thoughtful response rather than simply hurling monkey dung, I will answer your comments.
I would certainly agree that saying it would be too simplistic to say that the only reason Stalin did what he did was to stamp out Christianity. All of the personal and ethnic reasons were there, for sure. Religious warfare is often similar--tribal or personal grudges, or naked land and resource grabs veiled under the "excuse" of "God told us to do it." However, I would point out that Stalin absolutely ordered the torture and deaths of Christians for refusing to follow the atheistic state ideology. This is an undeniable fact. Other atheistic regimes have done the same thing. Was it their ONLY objective? No, but there is no denying the forcible eradication of religion was an objective.
I might suggest you read The Gulag Archipelago by Aleksandr Solzhenitsyn. You should also search the names of Aida Skripnikova, Richard Wurmbrand (Romania, in that case, a satellite state to the Soviet Union), and numerous others who have faced torture and death in such regimes. I can certainly provide you with many, many more names and stories if you wish. These acts cannot be denied. The Communist regime there, and in other nations, did go after Christianity and other religions; people who would not disavow their beliefs, or hide them well enough, were indeed targeted.
Acknowledging the complexities involved is one thing--but we definitely dare not go down the road of denying what happened, and that the eradication of religion by whatever means possible was indeed an objective of Communist regimes.
+1000
Thank you for saying what I didn't have the skill at the time to say.