This amounted to a formula for power: The greater the menace to the nation’s moral legitimacy, the more power redounded to the left. And the ’60s handed the left a laundry list of menaces to be defeated. If racism was necessarily at the top of the list, it was quickly followed by a litany of bigotries ending in “ism” and “phobia.”

The left had important achievements. It did rescue America from an unsustainable moral illegitimacy. It also established the great menace of racism as America’s most intolerable disgrace. But the left’s success has plunged it into its greatest crisis since the ’60s. The Achilles’ heel of the left has been its dependence on menace for power. Think of all the things it can ask for in the name of fighting menaces like “systemic racism” and “structural inequality.” But what happens when the evils that menace us begin to fade, and then keep fading?

It is undeniable that America has achieved since the ’60s one of the greatest moral evolutions ever. That is a profound problem for the left, whose existence is threatened by the diminishment of racial oppression. The left’s unspoken terror is that racism is no longer menacing enough to support its own power. The great crisis for the left today—the source of its angst and hatefulness—is its own encroaching obsolescence. Today the left looks to be slowly dying from lack of racial menace.