Sadly OAuth and OpenID aren't really aware of your app states (while OAuth WRAP can be). So you have to take the following assumption.
You could thread that parameter (the page they were at) through as a parameter to your return_to. As noted in the spec.
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.