Some Christian churches condemn trick-or-treating as if it were a branch of witchcraft. Instead, they have “fall festivals” in which children dress up like Bible characters or (in the Catholic tradition) like saints. Halloween is, in the literature of Fundamentalist Christianity, connected with Satanism. Even in some less rigid Evangelical traditions Halloween is considered to be pagan.
These are ignorant positions. So what is Halloween? It is the eve of All Saints’ Day, which is why it is sometimes called “All Hallows Eve.” In the ancient Druidic religion of the Celts, it was considered a day in which spirits could pass through to this world. These spirits were not necessarily evil; some were benevolent, others not so much. To protect themselves from harmful spirits, Celts would dress up as spirits to ward off the bad ones. Other customs, such as the jack-0-lantern, arose from the Roman Catholic tradition, from the practice of placing a candle in a turnip to remember souls in Purgatory. Since the souls in Purgatory will be in Heaven one day, remembering them was not considered to be a frightening occasion.
By the late nineteenth century, the elements that would later make up trick-or-treating were in place, but trick-or-treating did not become common practice until the twentieth century. Halloween was not historically associated with Satanism despite Fundamentalists who seem to find Satan around every corner except their own.
Roman Catholics have been, for the most part, friendly to trick-or-treating–even Fr. Gabriel Amroth, the Vatican’s chief exorcist, has no problem with trick-or-treating as long as it is only play. Mainline Protestants also have no problem with celebrating Halloween. But other Protestants and a few rigid Roman Catholics insist that Halloween remains a pagan festival even today that is wrong for Christians to celebrate.
The fallacy in the Fundamentalists’ argument is obvious: they assume that because a certain celebration began as x, it is always x. That is, they assume that if Halloween began as a pagan celebration, then any celebration of Halloween must be a pagan festival. This is a version of the genetic fallacy, which involves the assumption that because a practice originally had one meaning that it necessarily has that same meaning today. This is a common error some Christians (and many others) make, but the conclusion does not follow from the premise.
As a child, I loved trick-0r-treating. As long as precautions are taken against cruel people who would harm children during trick-or-treating, I believe it is a fun activity in which children can engage.