It's a Lego Advent-ure: Day 11

"I'm Officer George, and you lot are under arrest," the Police officer said as he came over to investigate who had fired the catapult at him.

"On what charge?" asked Batwoman.

"Assault on a police officer, beheading snowmen, loitering, loitering with intent, littering, rustling horses, street vending without a licence, destruction of property, theft and ... murder!"

"Murder?!  What do you mean murder?!" cried George.

"I only added that to get your attention" replied Officer George.  "Of course, since it is the Christmas season and because of randomness, I'm willing to drop the charges if you help me sing a carol."

"Seriously?" said George.
"Shuddupgeorge" hushed George as shse nudged him into silence.  "We'll do it!"