To call Donald Trump a fascist of some variety is simply to use a historical label that fits. PHOTOGRAPH BY SPENCER PLATT / GETTY

The best show in New York right now may be the Guggenheim’s retrospective of the work of László Moholy-Nagy (pronounced “nadge,” not “nadgy,” a lesson hard learned). Born to a Jewish family in Hungary in 1895, he assimilated all the advances and visual novelties of the early part of the twentieth century, from Russia and Paris alike, and turned them into an adaptable graphic manner that made him one of the indispensable teachers at the Bauhaus, in Dessau, Germany, in the nineteen-twenties, under Walter Gropius. When Hitler came to power, this citizen of cosmopolitanism then emigrated—heading first to Britain, where he made wonderful posters for the London Underground, and eventually and happily to Chicago, where he became one of the key figures in implementing the lessons of modern design that made Chicago a city of such architectural excitement in the mid-century. (Though how much pain and anxiety and sheer disrupted existence are covered over in the words “then emigrated”!)

Two thoughts, not strictly political but social, come to mind as one exits the museum: First, that the Weimar Republic gets a very bad rap for how it ended and insufficient credit for how much creative ferment and intelligent thought it contained. The notion that it was above all, or unusually, decadent was a creation of its enemies, who defined the creative energies of cosmopolitanism in that way. All republics are fragile; the German one, like the Third French Republic it paralleled, did not commit suicide—it was killed, by many murderers, not least by those who thought they could contain an authoritarian thirsting for power. And, second, that the United States has been the ultimate home of so many cosmopolitan citizens rejected by Europe. People expelled by hate from Europe wanted desperately to get to the American Midwest, to cities like Chicago—and, no doubt, to Cleveland, where the Republican Party holds its Convention next week. Cosmopolitanism is not a tribal trait; it is a virtue, as much as courage or honesty or compassion. Almost without exception, the periods of human civilization that we admire as we look back have been cosmopolitan in practice; even those, like the Bronze Age, that we imagine as monolithic and traditional turn out to be shaped by trade and exchange and multiple identity.

We walk out of the beautiful museum and find ourselves back in a uniquely frightening moment in American life. A candidate for President who is the announced enemy of the openness that America has traditionally stood for and that drew persecuted émigrés like Moholy-Nagy to America as to a golden land, a candidate who embraces the mottos and rhetoric of the pro-fascist groups of that same wretched time, has taken over one of our most venerable political parties, and he seems still in the ascendancy. His language remains not merely sloppy or incendiary but openly hostile to the simplest standards of truth and decency that have governed American politics. Most recently, just this week, he has repeated the lie that there has been a call for “a moment of silence” in honor of the murderer of five policemen in Dallas.

This ought to be, as people said quaintly just four or five months ago, “disqualifying.” Nonetheless, his takeover of the Republican Party is complete, and, in various postures of spinelessness, its authorities accede to his authority, or else opportunistically posture for a place in the wake of it. Many of them doubtless assume that he will lose and are hoping for a better position afterward—still, the very small show of backbone that would be required to resist his takeover seems unavailable. Even those who clearly fear and despise him, like the Bush family, seem able to register their opposition only in veiled language and cautiously equivocal formulations; Jeb Bush knows what Trump is, but still feels obliged to say that he would "feel sad" if Trump lost.

What is genuinely alarming is the urge, however human it may be, to normalize the abnormal by turning toward emotions and attitudes that are familiar. To their great credit, the editors of most of the leading conservative publications in America have recognized Trump for what he is, and have opposed his rise to power. Yet the habit of hatred is so ingrained in their psyches that even those who recognize at some level that Trump is a horror, when given the dangling bait of another chance to hate Hillary still leap at it, insisting on her “criminality” at the very moment when it’s officially rejected, and attempting to equate this normal politician with an abnormal threat to political life itself. They do this, in part, to placate their readership. In the so-called mainstream (call it liberal) media, meanwhile, the election is treated with blithe inconsequence, as another occasion for strategy-weighing. The Times, to take one example, ran a front-page analysis criticizing Trump for being insufficiently able to exploit a political opening given by the investigation into Clinton’s e-mail, with the complaint seeming to be that Trump just isn’t clever enough to give us a good fight—to be the fun opponent we want. If only he had some more _skill _at this! While the habits of hatred get the better of the right, the habits of self-approval through the fiction of being above it all contaminate the center.

A certain number of the disengaged insist that Trump isn’t really as bad as all that. And there may indeed be another universe in which Donald Trump is one more blowhard billionaire with mixed-up politics but a basically benevolent heart, a Ross Perot type, or perhaps more like Arnold Schwarzenegger, preaching some confused combination of populism and self-help and doomed to flounder when he comes to power. This would not be the worst thing imaginable. Unfortunately, that universe is not this one. Trump is unstable, a liar, narcissistic, contemptuous of the basic norms of political life, and deeply embedded among the most paranoid and irrational of conspiracy theorists. There may indeed be a pathos to his followers’ dreams of some populist rescue for their plights. But he did not come to political attention as a "populist"; he came to politics as a racist, a proponent of birtherism.

As I have written before, to call him a fascist of some variety is simply to use a historical label that fits. The arguments about whether he meets every point in some static fascism matrix show a misunderstanding of what that ideology involves. It is the essence of fascism to have no single fixed form—an attenuated form of nationalism in its basic nature, it naturally takes on the colors and practices of each nation it infects. In Italy, it is bombastic and neoclassical in form; in Spain, Catholic and religious; in Germany, violent and romantic. It took forms still crazier and more feverishly sinister, if one can imagine, in Romania, whereas under Oswald Mosley, in England, its manner was predictably paternalistic and aristocratic. It is no surprise that the American face of fascism would take on the forms of celebrity television and the casino greeter’s come-on, since that is as much our symbolic scene as nostalgic re-creations of Roman splendors once were Italy’s.

What all forms of fascism have in common is the glorification of the nation, and the exaggeration of its humiliations, with violence promised to its enemies, at home and abroad; the worship of power wherever it appears and whoever holds it; contempt for the rule of law and for reason; unashamed employment of repeated lies as a rhetorical strategy; and a promise of vengeance for those who feel themselves disempowered by history. It promises to turn back time and take no prisoners. That it can appeal to those who do not understand its consequences is doubtless true. But the first job of those who do understand is to state what those consequences invariably are. Those who think that the underlying institutions of American government are immunized against it fail to understand history. In every historical situation where a leader of Trump’s kind comes to power, normal safeguards collapse. Ours are older and therefore stronger? Watching the rapid collapse of the Republican Party is not an encouraging rehearsal. Donald Trump has a chance to seize power.

Hillary Clinton is an ordinary liberal politician. She has her faults, easily described, often documented—though, for the most part, the worst accusations against her have turned out to be fiction. No reasonable person, no matter how opposed to her politics, can believe for a second that Clinton’s accession to power would be a threat to the Constitution or the continuation of American democracy. No reasonable person can believe that Trump’s accession to power would not be. And, this time, would there be a second America, a new Chicago, waiting to receive the once-cosmopolitan citizens ejected by the triumph of this warped will?