Why are people scared of black cats?

Halloween started with the Ancient Celts. All Hallows Eve (which became the word Halloween) was the last day of their year. They believed November 1st (All Saints Day) was the start of the New Year and because it was Winter, it was the darkest time of the year. On this one night, October 31st, they believed spirits, ghosts, goblins and fairies came down from the hills into the towns. Some people believed if you left "treats" on the front porch for the spirits and ghosts, this would make them happy and they would not hurt you. There are many other stories about how Halloween got started.