This document provides an overview of witches and two famous instances involving witches - in Shakespeare's Macbeth and the Salem Witch Trials. It notes that witches were historically blamed for misfortune and discusses common stereotypes of witches like flying on broomsticks and having black cats. The passage from Macbeth where three witches stir a cauldron is cited as the origin of this stereotype. The Salem Witch Trials saw accusations of witchcraft in Massachusetts in 1692 leading to imprisonment, representing the dangers of mob mentality. The document concludes with a short quiz reviewing these details.