Thanks for the heads up there. Both from Wiki :Both the Blood Libel and the Host Desecration led to the deaths of thousands of Jews.
"Blood libel is a false accusation or claim that religious minorities, usually Jews, murder children to use their blood in certain aspects of their religious rituals and holidays. Historically, these claims—alongside those of well poisoning and host desecration—have been a major theme in European persecution of Jews."
"Host desecration is a form of sacrilege in Christianity ... involving the mistreatment or malicious use of ... the sacred bread used in the Eucharistic service or Mass."