Re: trick or treat ...
The children are safe here , because their parents go with them. So there is no magic to it. Same is true in our societies. We do not have this kind of celebration where kids go door to door asking for trick or treat. It would be considered a taboo to go door to door and extend your hand out to ask some eatables. This is considered begging and the society as a whole does not like something like it. There people will not go to neighbor's home uninvited to be treated with something to eat or drink. It is a big no no and big taboo.
I would share this old joke at this juncture.
A new person in town asked a store owner "what kind of folks live in this town ?"
He said "they are all nice , honest and peace loving."
New person said "then why do you have that big gun hanging on the wall all ready to kill ?"
Store owner said "To keep them nice , honest and peace loving."