The 2000-year-old Celtic harvest and New Year festival, Samhain, was celebrated on 1st of November. Celts usually lived in Ireland, United Kingdom and northern areas of France. This festival marked the end of pleasant summers and the beginning of bitter cold. These people believed in evil spirits and witchcraft and thought that they get loose on Earth and roam about on the night before New Year in search of preys and victims. Thus, they painted their faces and wear terrible costumes.

To frighten away these ghosts and witches so that they would not harm them and their cattle and crops. The inexplicability of certain natural occurrences gave rise to most of their fears and Druids...