Yes it is safe. I recently went swimming near Chillon castle and it was fine. It is one of the largest fresh water lakes in Europe & it was unsafe in the 1960's as well as the 1980's, but it is fine now.
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.