The deadly mechanics of a manufactured myth
For centuries, a singular, false accusation fueled the persecution of Jewish communities across Europe. Known as the blood libel, this antisemitic trope claimed Jews murdered Christian children to use their blood in religious rituals. It was a lie built on religious tension, economic greed, and the strategic creation of local martyrs.
While allegations of Jewish human sacrifice appear in Hellenistic writings—such as Apion’s claim that Greeks were sacrificed in Jerusalem—there is no direct historical link between these ancient slanders and the medieval blood libel. The specific medieval trope emerged in the 1s century in England, notably with the 1144 death of William of Norwich. A monk named Thomas of Monmouth promoted the boy as a martyr, spinning a narrative that Jews annually chose a location to crucify a child to fulfill a prophecy.
The myth evolved to include the claim that Jewish communities required Christian blood for the baking of matzos during Passover. This particular version was furthered by figures like Thomas of Cantimpré around 1260, who suggested Jews suffered from ailments only curable by Christian blood. These accusations were not merely superstitions; they were often tied to the economic interests of local leaders and the prestige of new religious cults. In England, the veneration of 'Little Saint Hugh of Lincoln' (1255) gained royal support from Henry III, providing official credibility to the lie.
The consequences were devastating. Accusations frequently led to mass executions, such as the burning of approximately 31 to 33 Jews in Blois, France, in 1171, and the massacre of 150 Jews in York in 1190. In some instances, the violence was so extreme that entire communities were wiped out, as seen in the 1430 Ravensburg incident. Despite the fundamental absurdity of the claim—given Judaism's explicit prohibition against consuming blood—the trope persisted into the modern era, only being formally renounced by the Roman Catholic Church through the 1965 declaration *Nostra aetate*.
Source: Blood libel
