God made Satan, and since God doesn't make mistakes, it is safe to assume that God wanted evil. However God wouldn't "man up" and admit it, and believers don't ask rational questions, so they went along with the charade that somehow Satan isn't part of God.
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.