Because everyone has a decision to make and that decsion is wether you want to be kind or not and if you choose to be mean you have to face the consequences so why can't everyone be peaceful only god knows we can try and try to find out but everyone will or would have a different answer to that question.
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.