[orthodoc]

That's pretty much how it was historically constructed, too. Trick or treating was/is a demand for protection payment.

Of course, the little kids in angel and Spiderman costumes aren't the ones who'll toilet paper and egg your home or car. I remember only being allowed to trick or treat in our immediate neighborhood; it was considered bad manners to go where you weren't known. The adults were happy to see us and we were safe. We could even accept homemade goodies (which were common)!