Every Christmas, it seems, someone decides that they’re the first to come up with the idea “what if Santa … was edgy?” So we get Santa Claus wearing a trench coat and firing guns sideways, or elves knocking over a bank, or Krampus building a meth lab in a trailer. (Remind me to tell you the story someday of when I was a PA at an animation company, fifteenish years ago, and the bosses were...