Halloween/Witchcraft: What's Behind the Mask?

Families across America are making choices about the celebration of Halloween. Should the house and yard be decorated with Halloween decor? Should the kids be allowed to dress up in costumes and go house to house collecting candy? Should a person take time to watch horror movies featuring witches, zombies and vampires? In the end, is this all harmless fun or is there more 'behind the mask'?