If it is your internet connection, then you are responsible for what happens over it. If you don't like him as a room mate, then get him to move Report him to the Police if necessary. Turning a blind eye to what he is doing means that you are agreeing with his actions.
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.