One option would be to put the value of your Message property into TempData in the HandleUnautherizeRequest method of your custom AuthorizeAttribute. Then in the LogOn action on your Account controller take the value from TempData and put it into the ViewBag or your model so that the View has access to it.
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.