Nearly half of the referees who officiate in my son’s hockey league are gone and games are being canceled every weekend. His team has been able to play just two of this season’s five scheduled games so far. This is happening across the nation in all youth sports. The Friday night lights of high school football games are now Thursdays and Saturdays, too — to spread the refs out. Instead of the usual three refs on a soccer pitch, some leagues are making do with two, or even one.