I can't give a definitive answer to the Nature-nurture question about barking. You may want to check out psychologist Stanley Coren's book, The Intelligence of dogs. If I remember correctly, Coren rates Rottweilers and German Shepherds as the large breeds that bark the most when they play the role of watchdog.
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.