I had heard it referred to as "classical liberalism*." But Dennis Prager shortens it to simply "liberalism." He defines it this way in We’re in a fight over basic values:
Liberalism – which was anti-Left, pro-American, and deeply committed to the Judeo-Christian foundations of America, regarded the melting pot as the American ideal, fought for free speech for its opponents, regarded Western civilization as the greatest moral and artistic human achievement, and viewed the celebration of racial identity as racism – is now affirmed almost exclusively on the right and among a handful of people who don’t call themselves conservative.
Then there's "the left." About them, Prager says this:
The Left, however, is opposed to every one of those core principles of liberalism.
Like the Left in every other country, the Left in America sees America as essentially a racist, xenophobic, colonialist, imperialist, war-mongering, money-worshipping, moronically religious nation.
Just as in Western Europe, the Left in America seeks to erase America’s Judeo-Christian foundations. The melting pot is regarded as nothing more than an anti-black, anti-Muslim, anti-Hispanic meme. The Left suppresses free speech, wherever possible, for those who oppose it, labeling all non-Left speech “hate speech.” To cite only one example, if you think Shakespeare was the greatest playwright, or Bach the greatest composer, you are a proponent of Dead White European Males and therefore racist.
Prager contends that it won't end until either the Right or the Left vanquishes the other. That's a bit harsh, and moderates would like to see less fighting. But as we saw in the demonstrations and heard in the speeches on inauguration day, the Left doesn't lack in ferocity. He could be right about this being a second civil war.
*There's a good definition of "classical liberalism" at mises.org. See What Is Classical Liberalism?
"Classical liberalism" is the term used to designate the ideology advocating private property, an unhampered market economy, the rule of law, constitutional guarantees of freedom of religion and of the press, and international peace based on free trade. Up until around 1900, this ideology was generally known simply as liberalism. The qualifying "classical" is now usually necessary, in English-speaking countries at least (but not, for instance, in France), because liberalism has come to be associated with wide-ranging interferences with private property and the market on behalf of egalitarian goals. This version of liberalism — if such it can still be called — is sometimes designated as "social," or (erroneously) "modern" or the "new," liberalism.