It depends with circumstances but you should not make sure the dog does not see the crate as a punishment. It should be part of their life and this attitude will be good for crate training. I hope I will soon do a hub on 'How long can the dog stay in the crate?
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.