I apologize. I was interrupted in the middle of a post. The practice of raiding gardens on Halloween seemed to be popular in Ireland as well. I think these sorts of pranks were the origins of trick-or-treating. One I have been learning more about this year is stealing someone's gate. My father-in-law said the practice was also quite common in the urban waterfront neighborhood he grew up in, before WWII. There was plenty of immigration at that time. In Ireland the gates would be left at the church where neighbors could retrieve them easily. I demonstrates, I thing a little community complicity in maintaining pre-Christian rituals. So the collective memory seems to replant itself itself in a new location with some echoes of the other side of the pond.