Stalin's Communism and Khmer Rogue
A notable argument I get from theists is that Atheists Governments are considered to be "Evil dictatorships". Proof of this usually stems from examples of Stalin's communism and the Khmer Rogue. Though this is a strawman argument, I'd like to dwell into a bit.
First off, I've gotten claims that the USSR (though mainly Russia) abuse or mistreat anyone of any religion (possibly gypsies too), and at worse sometimes even slaughter.
However from my own research though Stalin did promote communism and look down at religion he still legally allowed it. So I guess I want to know if anyone knows the truth about what Stalin really did to religious people, or if he really did treat them as badly as said.
The other topic is the Khmer Rogue. A government or party formed in Cambodia that represented an anti-religious stance as well. Claims of the Khmer rogue went from raiding cities and killing people for any violations against this movement. Though a major claim was their anti religious stance, which if you were religious you were imprisoned or more radically killed.
Of course the Khmer Rogue was ended when the North Vietnamese army rolled in and beat them shortly after the Vietnam War. Did the Vietnamese really destroy a group that promoted atheism? Ironic since I believe before, during and after the Vietnam War, Vietnam had murdered countless Western religious Vietnamese (namely Catholics influenced mainly from the French).
So as for the Khmer Rogue, were they really an atheist, anti religious group? If so, did they kill anyone who wasn't an atheist?
Did they really deserve to be conquered/destroyed by a foreign country due to their politics or anti religious ways?
And lastly, is this really proof anti-religious or atheist governments are bad?