Ultimately, you have to make that call. There is no wrong answer from your professor's point of view. You just need to find supporting evidence no matter what you decide.
Here's a really nice breakdown about the Communist Manifesto. It won't tell you what to say in your paper, but it might help you reach a conclusion. Good luck.
More.
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.