Halloween marks the end of harvest and the beginning of winter, a time of year associated with death. The pagan Celts believed that on that night, the boundary between the worlds of the living and dead blurred, and the ghosts of the dead returned to the earth. It was a night for preternatural communication with the dead, various forms of divination and prophecy, and sexual rituals. It was believed that Samhain, the lord of death, sent evil spirits abroad to attack humans, who could escape only by assuming disguises and looking like evil spirits themselves. Roman Catholic Church and some Christian sects strongly protest against costume parties because they believe that by dressing up like your favorite character in costumes parties even if it is a witch, Dorothy Costume from the Wizard of Oz or Superman is analogous to pagan worship that wears the head of a deer, wolf or horse while in a robe.
By the 800s, the influence of the Catholic Church entered into Celtic lands. In the seventh century, Pope Boniface IV had already designated November 1 All Saints' Day, a time to honor saints and martyrs. Later, the Church would make November 2 All Souls' Day, a day to honor the dead and the history of the Halloween Traditions has become immortal. The eve of All Saints', All Saints', and All Souls were celebrated with big bonfires, parades, and dressing up in costumes as saints, angels, and devils. This was the wise way the missionary Church acted in face of this pagan feast that she transformed. It was ordered the customs and habits that existed among a people to the Catholic Religion.
