What is an example of motif in the novel, The Winners (Beartown Series)?

Backman incorporates the motif of the sound of banging throughout The Winners: A Novel to foreshadow that Benji will die as a result of a gunshot. Benji hears the first bang in the novel. He believes he has been awakened by gunfire. Banging continues throughout the novel. These sounds are made by children playing hockey. The final bangs are those made by Matteo as he shoots three shots into the locker room, killing Benji.