Yes. Even the Crusaders were falsely accused by crisis actors who claimed to be in fear of them on the march; so that royals and bishops and such would provide them with "refuge" in places of power -- make them a protected class supposedly in need of extra special security measures. The difference in modern times is that it's not quite as easy anymore to get away with staging a false flag simply by lying accusations, so photo and film fakery productions and other rigged exhibits are presented as news/"evidence" to help the connivers deceive their "marks" -- usually for the same objectives as earlier eras: more security and expenditures of state for them, less freedom for others, wars...
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Christian-Jewish Relations: The Crusades (1095 - 1291)
Soon it was rumored that Godfrey of Bouillon himself had vowed that he would not set out for the Crusade until he had avenged the crucifixion by spilling the blood of the Jews, declaring that he could not tolerate that even one man calling himself a Jew should continue to live. ... the leaders of the Mainz community hastily dispatched a delegation to Emperor Henry IV, who wrote immediately to the princes, bishops, and counts of the empire to forbid them to harm the Jews. Godfrey himself replied that he had never had any such intention.