Normal, generally speaking, toddlers (and infants) are going to explore their bodies and even very young children quickly learn it feels different to touch their privates than to touch their nose. I would only be concerned if they are acting out actual sex acts (putting things in their body, using inappropriate language, acting out sex acts on other children or on toys like dolls, cannot be redirected, etc).
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.