Steve Kerr, the Warriors' coach, was an executive producer on Oscar-winning documentary "All the Empty Rooms" about families who lost their children to school shootings. The film, which follows CBS television journalist Steve Hartman and photographer Lou Bopp, was awarded Best Documentary Short Film at the Oscars. Kerr, who has long advocated for gun reform, used his name and notoriety as a coach to promote the film. He hopes that the film can inspire change in the country.