Some superstitions are supposed to bring good luck or happiness. People believe that meeting a Shudra on one's way for some work brings success. If one finds a horse-shoe and brings it hoe it could bring luck to the finder and the family. Breaking of crockery on the occasion of marriage ceremony is regarded as auspicious.
Superstitions can sometimes lead to horrifying crimes. Women, who were suspected of practicing witchcraft were tied and burnt alive. Joan of Arc was burnt to death because she was regarded by the English men as a witch. Child sacrifices are made to please gods.