The kite runner explores the idea of social hierarchy and how is causes discrimination to those surrounded by it. Social hierarchy is organized through a social structure called the caste system that separates the different social classes. The caste system plays a very important role in the kite runner. The book illustrates how the discrimination of the Hazaras is accepted and practiced by the Pashtuns. Their differences have led to the Pashtuns being the majority group and the Hazaras as the minority group. This discrimination has become built into society and effects everyday life. As Pashtuns, Amir and Baba have the opportunities to receive an education and start their own business. While the Hazaras, Hassan and Ali, may only work as servants. This discrimination brought on by social hierarchy causes isolation, violence, and guilt, to those surrounded by it throughout the book. These ideas are caused by discrimination and are explored through Amir’s experiences in the book. As a Pashtun, he experiences the effects of social hierarchy first hand, and because discrimination is such prominent tradition in his culture, we are able to see the underlying effects it has on his life. The effects that social hierarchy has on people can be seen when Amir isolates himself from the rest of the world after he witnesses the discrimination of Hassan. Amir causes his own isolation by witnessing the rape of his friend Hassan, and failing to intervene causing Hassan to sacrifice himself