How is our response to Bruno developed throughout the course of The Boy in the Striped Pajamas?

Boyne
actually does a fairly neat trick with hisof Bruno throughout the novel.  In general, the
Holocaust is a subject that reduces all  of us to the role of children.  The questions that are
generated by its study are some of the most elemental, questions that a child would ask: 
"How could this happen?"  "How could people do this to one another?" 
"Is there any justice for those who were victimized?"  "What were children like
during the Holocaust?"  "Why didn't anyone...