Concepts have cultural biographies and social lives. Some concepts become social and political keywords that can be both indicative of and instrumental in social and political conflicts. (It might even be possible to speak of conceptual violence.) But they are not just contentious; they also tend to be contested. Contentious and contested concepts have been studied by historians and social scientists from varying temporal and spatial horizons. It is a research area that lends itself to cross-disciplinary approaches, as is demonstrated in the three contributions to this section, the first of which investigates the Russian obsession with the concept of “Europe.” The second contribution to the section explores the military roots of the concept of “creative thinking,” and the final contribution examines the social life of “political correctness” as a fighting word.