Understanding how you got into a bad situation can be helpful. Michael Tomasky offers assistance in an article called “President Trump Is What Happens After Republicans Spend Decades Rebranding Knowledge as Elitism and Ignorance as Bliss”:

There’s no doubt that it’s a liberal reflex to sometimes make fun of conservatives for not knowing things. And yeah, some liberals do that in a superior and supercilious tone.

But what’s happened in this country over the last, oh, 40 years or so is that in our political discourse, it has become far, far worse to make fun of someone for not knowing some basic historical fact than it is to not know the fact. And that is absurd.

I’m sorry. By which I mean, I’m not remotely sorry: It is worse—plainly and unambiguously worse—to be ignorant of basic history than it is to know that history and be a little insufferable about knowing it. A civilization that has concluded that the latter is worse is a civilization that is valuing attitude and posture over fact, and that is precisely the corkscrewed value system gave us a cretin like Trump in the first place.

When the conservative counter-offensive really kicked in, back in the 1970s, conservatives who wanted to dramatically remake and reorder American society knew they had a big job in front of them. All kinds of presumptions about how life and society worked were lodged deep in people’s minds. Many—most, indeed perhaps nearly all—of those assumptions were kind of liberal. The Republicans caused the Depression. Roosevelt saved the country. Unions helped us prosper in the postwar era. Science was noble, and experts were to be venerated. Religion was to remain private. The generals got us into an unwinnable war in Vietnam. And so on.

These were all things that the broad majority of Americans believed. They were also, well, you know, true. Republicans did wreck the country in 1929, FDR did save it, experts had expertise that was of value. Conservatives had to get Americans to un-believe all that—to hate unions and mistrust experts, to agree that liberals lost the Vietnam War.

That effort involved two prongs. The first and more obvious was inventing their own set of “facts” whereby, say, Roosevelt prolonged the Depression. The second prong was the discrediting of those who continued to trumpet the old liberal version of reality, and the sharpest knife in that drawer was by far the charge of elitism.

Once Republicans figured that out, the discrediting got simple. All you had to do to puncture someone’s argument was call that person an elitist. It often didn’t matter whether that someone was factually correct. In fact, being factually correct was all the more damning! Knowing the difference, say, between the Lippmann and Dewey points of view was evidence itself that one was too dependent on exterior knowledge, had no internal instincts on which to operate and base decisions.

Well, 40 years later, here we are. We finally have a president of the United States who is all gut, no knowledge. There are consequences to this. Our allies don’t like us. We’re starting trade wars with them that are ahistorical and ungrounded in fact. Trump’s going to Canada today for a G-7 meeting he has no desire to attend and where not much of anyone wants to see him. On the apparently upcoming North Korea meeting, Trump said Thursday, “I don’t think I have to prepare very much”….

So laugh when Trump blurts out some historical whopper. God knows we all need to laugh. But remember too—the fact that a man that ignorant is our president is the culmination (I hope, anyway) of a long attack on truth set in motion four decades ago that persuaded millions of Americans that knowledge is slavery and ignorance is indeed bliss.

I’d change that last sentence to say millions of Americans think knowledge is unnecessary, expertise is suspect and ignorance is comfortable, but that’s a mere quibble in the current crisis.