

The scholars Patrik Hermansson, David Lawrence, Joe Mulhall, and Simon Murdoch noted that in the " press and broadcast media", the term had been "used to describe everything from hardcore Nazis and Holocaust deniers, through to mainstream Republicans in the US, and right-wing populists in Europe".

As the alt-right rose to wider awareness around 2016, media sources struggled to understand it some commentators applied the term as a catch-all for anyone they deemed far-right. Efforts to define the alt-right have been complicated by the contradictory ways in which self-described "alt-rightists" have defined the movement, and by the tendency among some of its political opponents to apply the term "alt-right" liberally to a broad range of right-wing groups and viewpoints. A distinct far-right movement arising in the 2010s, it both drew on older far-right ideas, and displayed novelties. The term "alt-right" is an abbreviation of "alternative right". Critics charge that the term "alt-right" is merely a rebranding of white supremacism. Alt-right material has contributed to the radicalization of men responsible for various murders and terrorist attacks in the U.S. The alt-right's membership is overwhelmingly white and male, attracted to the movement by deteriorating living standards and prospects, anxieties about the social role of white masculinity, and anger at left-wing and non-white forms of identity politics, such as feminism and Black Lives Matter. Individuals aligned with many of the alt-right's ideas, but not its white nationalism, have been termed " alt-lite". The movement distinguished itself from earlier forms of white nationalism through its largely online presence and its heavy use of irony and humor, particularly through the promotion of Internet memes like Pepe the Frog. Most adherents to the alt-right are also Islamophobic and oppose Islam. The alt-right is anti-feminist and intersects with the online manosphere. Some alt-rightists are antisemitic, promoting a conspiracy theory that there is a Jewish plot to bring about white genocide, although other alt-rightists view most Jews as members of the white race.

Some alt-rightists seek to make white nationalism socially respectable, while others, known as the " 1488" scene, adopt openly white supremacist and neo-Nazi stances to shock and provoke. Many of its members seek to replace the U.S. governance, and opposes both the conservative and liberal wings of the country's political mainstream. Anti-egalitarian, it rejects the liberal democratic basis of U.S. The alt-right movement espouses the pseudoscientific idea of biological racism and promotes a form of identity politics in favor of European Americans and white people internationally. The fallout from the rally resulted in a decline of the alt-right. Attempting to move from a web-based to a street-based movement, Spencer and other alt-rightists organized the August 2017 Unite the Right rally in Charlottesville, Virginia, which led to violent clashes with counter-demonstrators. Upon being elected, Trump disavowed the movement. In 2015, it attracted broader attention-particularly through coverage on Steve Bannon's Breitbart News-due to alt-right support for Donald Trump's 2016 presidential campaign. Following the 2014 Gamergate controversy, the alt-right made increasing use of trolling and online harassment to raise its profile. It came to be associated with other white nationalist websites and groups, including Andrew Anglin's Daily Stormer, Brad Griffin's Occidental Dissent, and Matthew Heimbach's Traditionalist Worker Party. His term was shortened to "alt-right", and popularised by far-right participants of /pol/, the politics board of web forum 4chan. His "alternative right" was influenced by earlier forms of American white nationalism, as well as paleoconservatism, the Dark Enlightenment, and the Nouvelle Droite.

Spencer launched The Alternative Right webzine. In 2010, the American white nationalist Richard B. The term is ill-defined, having been used in different ways by alt-right members, media commentators, journalists, and academics. A largely online phenomenon, the alt-right originated in the United States during the late 2000s before increasing in popularity during the mid-2010s and establishing a presence in other countries, and then declining since 2017. The alt-right, an abbreviation of alternative right, is a far-right, white nationalist movement. An alt-right supporter at the March 4 Trump rally in Saint Paul, Minnesota a depiction of Pepe the Frog has been digitally removed from the lower left corner of the man's sign due to copyright issues.
