“Antiracism” is part of a PC phalanx of ideas that permit no dissent and thus are effectively totalitarian. Besides being stupid and wrong totalitarianism and political correctness are boring. The excerpt below is from an essay on this subject by Peter Frost. His essay is well-worth reading in full to get a sense of how widely held sociopolitical beliefs can become narrow and close-minded, effectively stifling discussion and rational thought rather than promoting it.
…Words like “racism,” “social Darwinism,” and “hereditarianism” create the impression that a single monolithic ideology prevailed before the triumph of antiracism. Actually, the truth was almost the reverse. There was initially a wide spectrum of beliefs, as is normally the case before one belief pushes out its rivals and imposes its vision of reality. Antiracism triumphed because it was more ideological than its rivals; it possessed a unity of purpose that enabled it to neutralize one potential opponent after another. Often, the latter were unaware of this adversarial relationship and assumed they were dealing with a friendly ally. (Source)