Canards & Vanilla History
X is a tiny minority wielding grossly disproportionate influence in a society. X promotes accounts blaming the larger group, Y, for alleged persecution of X. Y points to evidence of X provoking Y throughout history. "It takes two to tangle!" the Y apologists insist.
X employs its resources in media, academia, and the entertainment industry to convince society the evidence some Y adduce of X misbehavior in itself exemplifies Y misbehavior. "They promote anti-X canards!" the X apologists insist. Society proceeds to mainstream anti-Y canards.
See how it works? Accounts of X misbehavior are dismissed as canards. Allegations of Y misbehavior? Well, that's just vanilla history.