It's because there are 2 dc:title elements returned by the Descendants() . One with a xsi:type attribute and one without. When you call .
Value on the one without in your where it gives you a null reference exception. You need to check for the attribute been null before you inspect the value.
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.