A bishop in Pennsylvania on Friday apologized for a Catholic school parade that featured a copy of the Auschwitz death camp gate. Reverend Timothy C. Senior, the bishop of Harrisburg, said he was “shocked and appalled” by the Halloween float from the Saint Joseph Catholic School in Hanover, Pennsylvania. Senior described the float as a replica of the Auschwitz gate, including the words “Arbeit macht frei,” or “Work makes you free.” The slogan is an infamous symbol of the camp, where more than 1 million people, mostly Jews, were murdered. The Auschwitz Memorial museum has called the slogan a “cynical...