Question

In The Kite Runner, Assef tells Amir, “Afghanistan is like a beautiful mansion littered with garbage, and someone has to take out the garbage.” In Assef’s mind, this justifies _____.

discrimination against minority peoples
the lack of cleanliness in Kabul
the gunfire overheard in the streets
the Soviet invasion

Answer 1

The answer would be the first one. The others do not suite the phrase

Answer 2

I believe that the answer is 'discrimination against minority peoples'.
Assef believes that there are a lot of people that deserve to be killed, thus being represented by the 'garbage in the mansion'.