Blood Libel refers to a false accusation that Jewish people kidnapped and murdered Christian children to use their blood in religious rituals, particularly during Passover. This myth emerged in medieval Europe and fueled widespread anti-Semitism, leading to violence and persecution against Jewish communities. The first known instance of blood libel occurred in 1144 in Norwich, England, when the disappearance of a boy named William of Norwich was falsely attributed to Jews. Despite being debunked, these accusations persisted for centuries, contributing to the tragic history of discrimination and violence against Jews throughout Europe.