When I read period material - and it ain't on Google - I am always alert for that one incredible detail. I'll read a whole book and get three words out of it, but they'll be three really good words.
The only way you can handle big kinds of questions is to simply state briefly what the truth was. What am I going to tell you about the Holocaust? Would you like three pages about it? I don't think you would... I don't think anything different than you think - it was horrible.