Good intentions abound. That’s the only reason people still embrace misguided ideas like “colorblind society,” despite the powerfully negative connotations that such phrases conjure up.

The latest nicey-nicey concept I’ve encountered (and no doubt you have as well) is the absurd notion that, for America to succeed, we need to put aside our differences. In essence, we all need to get along.

Where in the hell did this strange idea come from?

For the overwhelming majority of American history, we have not all gotten along.

For example, Hamilton and Jefferson didn’t say, “let’s be pals” when they were hashing out what kind of government we should have. They had more important things to do.

Even during the so-called Era of Good Feelings, America’s many slaves weren’t feeling the love and joining in group hugs.

Speaking of slavery, America didn’t even reach its centennial before we started shooting at each other over that touchy topic. And it was another century of violence and antagonism before the government said, “Maybe we should be nicer to ethnic minorities.” At no point in that process did we all get along.

Yes, one could argue that the country was united during World War II, but even in that case, all it took to bind us together was a global conflagration where millions of people died and the very survival of democracy was in question. In other words… good times.

More recently, we’ve come to blows over Vietnam and Iraq, over abortion and affirmative action, over gay rights and healthcare.

So when was this mythical time when Americans were of one mind? And why does anyone think this is a necessary condition in order for the country to thrive? Obviously, we’ve found a way to work around our internecine loathing.

The truth is that a nation as vast as ours — with its myriad subcultures, each enjoying a large degree of freedom — is never going to be truly united. To believe otherwise is to embrace the thinking of a child.

However, this Kumbaya concept is more than a pathetic pipe dream. It features an insidious aspect snaking below the surface.

We see this in the earnest pleas, even demands, for liberals to shut up and support Trump. Of course, conservatives would like nothing better than for progressives to give Trump a chance (which many liberals, inexplicably, are quite willing to do).

But why would leftists agree to a right-wing agenda that goes against every principle we have, and that could lead America into chaos? Apparently, we should do so out of blind patriotism and for the sake of the vague, abstract concept of “unity.”

According to this idea, striving to be friends supersedes the threat of decimating the country.

“Yes, thousands of people are dead now because Obamacare was repealed, but at least we’re all getting along, and that’s the most important thing. Yup.”

This is clearly insane.

And aside from the specifics of the current era — where a wannabe fascist seeks to make the nation great again for white supremacists — the fact remains that striving for unity at all costs is spectacularly naïve, even destructive.

The US Constitution is the result of Founding Fathers threatening to duel each other to the death. Slavery was abolished through warfare. Civil rights came only after decades of people refusing to back down, and not settling for getting along.

One of the virtues/flaws of American culture is our hyper-competitiveness. As such, one idea or principle usually emerges triumphant. Sometimes it’s a good idea… and sometimes it’s not. Still, as we know, the moral arc is long but bends toward justice (at least we hope it does).

However, progress is delayed even more when we smile and act polite in the face of idiocy or fanaticism or demagoguery. And there is no need to do so.

Because we have never all gotten along.

And we never will.