What are the 4 most shocking moments in the kite runner? with page number please

I don't have a copy of the book with me, but I'd have to go with the rape of Hassan, and Amir's complete desertion of his best friend. Secondly, the changes Amir and his father experience in America. Third, Amir's meeting with Assef and his discovery of Sohrab (the violence and uncertainty are heartbreaking), and lastly, the section where Sohrab runs away.