If you intend to display multiple dialogs at the same time, then you have concurrency issues, not otherwise. However, getting rid of all the static stuff would make the design cleaner, safer and easier to test. Just control the creation and showing of the dialog from the calling code and you don't need any static stuff.
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.