It is the middle class Left, still attached to the fraying threads of cultural Marxism, that is the villain of the peace here. For them, the honourable fight against racism naturally merges into other streams in their tradition, most particularly the will to suppress.
This Leftism is totalitarian in its instincts. But, living in a liberal democracy, its adherents can hardly send you to the Gulag. What they can do is to slander you, drive you out of your job, and have you shunned by mainstream society as a “bigot”.
Of course, the mask slips when their heroes are exposed as racist themselves. Take the literal and figurative poster boy of the ideological Left — Che Guevara. His vicious racism against black people knew no bounds.