Before discussing the very, very Bad Santa at the heart of director Tommy Wirkola's Violent Night, I want to address this grisly action comedy's other heroic perpetrator of bloody mayhem. Because despite the commitment that David Harbour lends to his portrayal of a jolly old elf by way of The Northman, seven-year-old Trudy Lightstone (endearingly enacted by Leah Brady) is easily the film's more interesting figure, largely for being the only movie character I can think of to truly call out the insidious irresponsibility in that holiday “classic” Home Alone.