What is the Alt-Right? The Alt-Right is a fringe far-right ideological movement that espouses ethnonationalism, particularly European nationalism, viewing countries and cultures as being inherently a matter of “blood and soil” — a concept embraced by Nazi Germany tied to the notion of ethnic purity and anti-Semitism. The Alt-Right has heavily used social media to promote its ideology, with Alt-Right activists and trolls often waging online campaigns against enemies and spreading memes via Twitter, 4chan, and Reddit, among other platforms.