Tell Them One Thousand-and-One Times and Then Change Your Tactic
If you were watching that parent scream at his child, you might suggest he try another tactic rather than hostility and demands. You might suggest that another approach to his child might bear a more fruitful result. You might suggest that his frustration and rage, while perhaps completely justified, is not achieving the result he wants. And, sure, he might tell you to stick it up your ass but at least you tried.
Christmas is a time for giving, being with family and friends, and hating every other asshole out there in the shops and on the roads also trying to spread joy and share in the Christmas spirit. Similarly, Hanukkah is a time for Jewish people to desperately try to feel relevant during Christmastime.