How is it possible to guard small children from being emotionally exploited by their narcissistic grandparents?

By keeping them away from their grandparents as much as you can - and by providing a counter example, by serving as role models of non-narcissistic conduct.

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.