I have the same exact problem with a family member well actually seven and they were my uncles I wanted my revenge cleanse their impure selfs off this world however I cannot I stop thinking about it because it from the past and you cannot change the past only you cannot let it happen again to you or to anybody in the present and the future you have to stay strong and those filths can burn down in hell.
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.