By setting your DataContext in XAML, you've decided to instantiate a new DiscoveredItemList instead of binding to the one in your codebehind. Therefore your codebehind won't have a direct reference to the DiscoveredItemList, but you can always search for it by name.
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.