What was the theme of discrimination wioth Hassan?

The Kite Runner tackles the issue of ethnic discrimination in Afghanistan with an example of the relationship between Pashtuns and Hazaras. Baba's father sets an example for him of being kind to Hazara people, even though they are historically demeaned and persecuted. He could have easily sent Ali to an orphanage after his parents' death, but chose to raise him in his household. Baba does the same with Hassan, although this is complicated by the fact that Hassan is actually his son. Even in Baba's house, the house of best intentions, the class barrier between the Pashtuns and Hazaras endures. Ali is as dear to Baba as a brother; he calls him "family." But Ali still lives in a hut and sleeps on a mattress on the floor. He tends the garden, cooks, and cleans up after Baba, and raises Hassan to do the same. So strong is Hassan's identity as a servant that even as an adult, when Baba is gone, he has no sense of entitlement. He insists on staying in the hut and doing housework. When Hassan dies defending Baba's house, he does so not because he feels it belongs to him, but because he is being loyal to Baba and Amir.

In Taliban-controlled Afghanistan, discrimination is everywhere and nowhere at the same time. On the one hand, the Taliban do not seem to care whom they are beating, torturing, or executing. Children like Sohrab and grandmothers like Sanaubar are all susceptible to the Taliban's cruelty. In this way, the Talibs discriminate against everyone but themselves. As Amir notices, Assef forces Sohrab to dance to music for his enjoyment dancing and listening to music have long been banned. Amir thinks, "I guessed music wasn't sinful as long as it played to Taliban ears." On another level, the Taliban discriminate specifically against the Hazara people. They massacre the Hazaras not only in Mazar-i-Sharif, but in the region of Hazarajat and nearly anywhere else they can find them. Assef and his fellows do not see the Hazaras' lives as worthwhile; they barely see them as human. Assef tells Amir, "Afghanistan is like a beautiful mansion littered with garbage, and someone has to take out the garbage." Like his idol, Hitler, he feels entitled to killing those he deems unworthy of living in his land. He even relishes the term "ethnic cleansing" because it goes so well with his garbage metaphor. Hosseini has mentioned in interviews that his focus on discrimination in The Kite Runner angers some Afghans, who feel it is inappropriate. Like Baba, many people do not mention the Hazaras' history of persecution. Perhaps these people are so uncomfortable with this topic because by having Assef appear in pre-Taliban times and emerge as a leading Talib, Hosseini shows that the Taliban's persecution of the Hazaras and other Shiites is not new, but a greatly intensified outgrowth of long-held discrimination.