This image is important because it basically shows Arnold life. This is where he was born,raised,and where he lives. Almost everything Arnold loves is at the reservation.
This image is important because this shows the place that Arnold had to face in order to get what he wanted, Hope. And it's also where a bunch a white kids go for school.
This image is important because this is where Arnold struggled a lot. Arnold doesn't have any hope, he felt angry all the time and alone. Anywhere he would go, he would get beat up, but it was a place where him and rowdy would spend time together which is all he ever liked to do.