Golden State coach Steve Kerr is now an Oscar winner. Kerr was one of the executive producers for “All the Empty Rooms,” which won the Oscar for documentary short. The 35-minute film chronicles how broadcast journalist Steve Hartman and photographer Lou Bopp told the stories of how families have memorialized the bedrooms of children killed in mass shootings. Kerr — whose father, then the president of American University in Beirut, was shot and killed in 1984 — has long spoken out about a need for common-sense gun regulation.