When I thought about this for a few minutes I realized that The Kite Runner directly applies to this idea. The first scene that came to mind was when Hassan was raped. The author was very descriptive during this section of the book (hence I do not want to include any quotes) and I think there was a reason for the author's decision. By including so much detail the reader will mostly likely remember this part of the book more. This makes sense since Hassan being abused was the turning point in the novel and the rest of the story revolved around that event. Another violent vivid scene that sticks out is when Amir fights Assef. "My ribs snapping like the tree branches Hassan used to break to sword fight" (Hosseini 288). It would make sense that the author would want the reader to remember this scene as well since it is when Amir comes to peace with himself. Amir finally sticks up for Hassan by sticking up for Sohrab, Hassan's son. Without these scenes being so violent, I don't think they would have been as memorable.
So I
guess in the author's case, violence was for once the answer.