The secular tradition of trick-or-treating has its roots in both the pagan and Christian holidays.
This is my first Hallowe'en on the West Coast in British Columbia, wwh. I experienced every other Hallowe'en in south-western Ontario where our traditions are the same as anything I have seen in Michigan. I was surprised to learn that Fireworks are a big deal out here on Hallowe'en. Not just sparklers but the whole 'works including community pyrotechnic displays. Is this a West Coast thing or just a British Columbia thing?