Grandma set ablaze in Alleged Exorcism Attempt?

I do not think it's a matter of primitevness, honestly. Remember, religions like Vodou and Santeria came from tribal African religions when slavery was brought to the islands. Lots of people believe in witches and lots of people still practice witchcraft. Lots of things have power if you believe in them. Belief in witchcraft alone does not make them primitive.