>>535631229
In Rabbit Sault's uptie story, it talks about the initiation ritual they did for him to join, where they tasked him with taking out a rival gang's member and showing it to them, thinkin he'd chicken out and stop bothering them after such a request. He came back with a bodysack dragging the corpse of some gang grunt he killed.
Who it was isn't really that important, but more so what it symbolizes, which is basically loss of innocence I guess, and willingness to do despicable things to get what he wants.