They key word here is communist. Why do you assume that if the world becomes mostly atheist; that they will support communism? There is actually a very low probability that they will support communism.
Most atheists in the westernised world do not support communism. They mainly exclusively support secularism.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.