I dare to answer my own question just for reference for future readers.
Removing a user with Limited access on the top level site should not actually remove their explicit access on the list or library below (with broken permissions) but MS do say in the above mentioned article.
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.