Rare Primary Sources Supporting Political Extremism Research

The twentieth century was dominated by a chain of events that brought about significant changes in world history, redefining the era and transforming political ideologies. Political Extremism & Radicalism in the Twentieth Century helps researchers study the development, actions, and ideas behind political extremism during this pivotal time in history. The archive contains more than 600,000 pages of content and more than 42 audio histories with full transcripts, making it the largest and most comprehensive resource of its kind. Because this information lies in one fully searchable digital archive, researchers can make comparisons and connections not previously discoverable and promote open dialogue on the topic.

Explore the categories below for detailed information about the individual subcollections and how each one uniquely supports academic research and publishing.

Themes Covered

The History of Fascism & Anti-Fascism

Explore several collections containing an array of materials and documents related to the extreme right as well as anti-fascist organizations.

The History of Hate and Extremism in America

Dive into highly sought after collections providing students and researchers primary source materials that give scholarly context to why hate groups formed.

British Extremism and Radical Politics

Read more about collections containing materials that reveal the workings of extreme and radical political groups in Britain.

The History of American Propaganda

Take a closer look at four collections that offer critical documentation of the history of American Propaganda.

Anti-War Propaganda and Leftist Politics

Examine collections that provide insight into left-wing politics in the twentieth century, with content on communism, socialism and liberalism, alongside other leftist ideologies.

Black Panther History and Literature

Browse through pamphlets, posters, photos and articles to examine the other side of radical politics, as the Black Panther Party had significant support from African Americans on the broad political left. 

Radical Propaganda and Literature

Read more about collections containing a variety of propaganda materials, government documents, books, and ephemera related to the extreme right and anti-fascist organizations.

History of Anti-Semitism in America

Anti-Semitism has been a constant presence throughout American Jewish history, and that presence can be explored using Gale's Political Extremism and Radicalism series.

History of Right-Wing Extremism

Using Gale's Political Extremism and Radicalism series, researchers can examine the ideology and development of a wide range of right-wing extremist groups.

Racism and White Supremacy in America

Gale's Political Extremism and Radicalism series is an essential resource that provides researchers with primary source content that examines the role of racism, white supremacy, and white nationalism in racist ideologies.