The eye is immediately caught by the bold red barricade slicing the composition, a visual and ideological frontier. On one side, a determined crowd advances under the hammer-and-sickle banners, their faces stylized into a near-march of identical resolve. On the other, two figures—one in a soldier’s uniform, the other a muscular worker gripping a sledgehammer—stand firm, backs to the viewer, guardians of the border marked “Hie Basel – hie Schweizer Boden.” The stark palette of red, black, and green heightens the sense of confrontation, while the diagonal barrier and mirrored flags make the stakes unmistakable: this is a poster about lines that must not be crossed, both literal and political. Created around 1925, Hie Basel – hie Schweizer Boden – Liste 3 by Otto Plattner belongs to a turbulent era when Europe’s borders and loyalties were fiercely contested.

Political posters like this were common tools in the hands of parties and movements, meant to rally the population against perceived threats—here, the specter of communism pressing at Switzerland’s gates. The imagery of the Swiss soldier and the blacksmith evokes the ideal of national unity between citizen and defender, a motif echoed in contemporary propaganda across the continent. History has kept few traces of Plattner’s individual career, but this work, preserved in a self-scanned collection, stands as a vivid reminder of how art and politics collided on the walls of interwar Europe.

Look again at the faces in the crowd and the set jaw of the worker: the anxieties and hopes of a whole generation are written there.