: a right-wing, primarily online political movement or grouping based in the U.S. whose members reject mainstream conservative politics and espouse extremist beliefs and policies typically centered on ideas of white nationalism
Welcome to the alt-right. The label blends together straight-up white supremacists, nationalists who think conservatives have sold out to globalization, and nativists who fear immigration will spur civil disarray. Dylan Matthews
Rather than concede the moral high ground to the left, the alt right turns the left's moralism on its head and makes it a badge of honor to be called "racist," "homophobic," and "sexist." Benjamin Welton
Regardless of who triumphs at the ballot box, the biggest winner of this presidential election may be the alt-right: a sprawling coalition of reactionary conservatives who have lobbied to make the United States more "traditional," more "populist" and more white. Jonathon Morgan
—often used before another noun
an alt-right manifestoSecularism is indeed correlated with greater tolerance of gay marriage and pot legalization. But it's also making America's partisan clashes more brutal. And it has contributed to the rise of … the so-called alt-right movement, whose members see themselves as proponents of white nationalism. Peter Beinart