Left–right political spectrum
The terms left-wing and right-wing are widely used in the United States, but as on the global level there is no firm consensus about their meaning. The only aspect that is generally agreed upon is that they are the defining opposites of the United States political spectrum. Left and right in the U.S. are generally associated with liberal and conservative respectively, although the meanings of the two sets of terms do not entirely coincide. Depending on the political affiliation of the individual using them, these terms can be spoken with varying implications. A 2005 poll of 2,209 American adults showed that "respondents generally viewed the paired concepts liberals and left-wingers and conservatives and right-wingers as possessing, respectively, generally similar political beliefs", but also showed that around ten percent fewer respondents understood the terms left and right than understood the terms liberal and conservative.
Alt-right
, the scope of the term "alt-right" is still in flux. The Associated Press advises its journalists to not use the term without providing an internal definition, due to its vagueness. The Anti-Defamation League states that "alt-right" is a "vague term actually encompass[ing] a range of people on the extreme right who reject mainstream conservatism in favor of forms of conservatism that embrace implicit or explicit racism or white supremacy". Conservative writer Ben Shapiro claims that the American Left has attempted "to lump in the Right with the alt-right by accepting a broader, false definition of the alt-right that could include traditional conservatism", but other conservatives have advocated for a broader definition. For instance, Allum Bokhari and Milo Yiannopoulos of "Breitbart News" described the alt-right in March 2016 as "an amorphous movement ... some—mostly Establishment types—insist it's little more than a vehicle for the worst dregs of human society: anti-Semites, white supremacists, and other members of the Stormfront set". On the other hand, the Southern Poverty Law Center states that "[t]he Alt-Right is intimately connected [to] American Identitarianism, a version of an ideology popular in Europe that emphasizes cultural and racial homogeneity within different countries" and also notes that multiple alt-right leaders, including Richard B. Spencer, embrace explicit antisemitism.