In the early twentieth century industrial, political, and social conflicts occurred throughout the United States during a period of rapid industrialization and modernization. Examples of these disputes, such as labor strikes and political struggles, have frequently been the subjects of scholarly investigations. Yet certain aspects of these conflicts remain relatively unknown, particularly on the community and local levels. The purpose of the present study was to explore and provide the context for a better understanding of the motives behind the responses of antiradicals to left-wing radicalism. What were some of the social, cultural, and economic motivations of local antiradicals in the city of Portland from 1917 to 1941?