This article offers a comparison of the Communist anti-fascist experience in the United States and Britain in the inter-war period. The focus is on opposition to domestic fascism and the comparison extends across three areas, namely, respective analyses, organization, and political
violence. This article demonstrates how both Communist parties initially understood fascism as a developing trend within bourgeois capitalist democracy before they, reflecting the Comintern's shift to the Popular Front, reworked their anti-fascism into different forms of democratic and progressive
rhetoric. It places Communists at the forefront of anti-fascist campaigns in the US and Britain and yet, despite obvious transatlantic links, this article reveals that the organizational manifestations of their anti-fascism diverged significantly. The final section calls attention to the role
of Communists in physical force anti-fascism, and reveals that Communist involvement in violent disturbances during the 1930s (if not the 1920s) appears more common in Britain than in the US. Nonetheless, it still cautions against making too much of physical confrontation as the single most
important feature defining the British Communist anti-fascist experience.