It was an almost unimaginable sight. This weekend, a Jewish contestant from the reality TV show “HaAkh Hagadol,” the Israeli version of “Big Brother,” walked into a room, gave the Nazi salute, and said, “Heil Hitler.” Unsurprisingly, calls immediately poured in for the contestant, Netanel, to be kicked out of the game, along with his companion Shahav, who had given the same salute several days earlier, inexplicably, without any comment. The pair seem to be joking, with the former making the move after seeing another contestant apply a drop of wax to the center of her upper lip. Get our...