Off the top of my head, you could subclass UIWindow or UIApplication and override sendEvent:(UIEvent *)event and take action from there.
I don't think you should subclass UIScrollView (or UITableView - that extends from UIScrollView) just to handle touch events, as there are some other ways to accomplish what you might be looking for in a cleaner way.
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.