anti-art movement reacting to World War I, embracing absurdity, anti-rationalism, and anti-bourgeois politics. It introduced new media such as photomontage, ready-mades, and performance, influencing conceptual and performance art. Marcel Duchamp's ready-mades, like Fountain (1917), emphasized concept over craftsmanship, while Hannah Höch's photomontages, such as Cut with the Kitchen Knife (1919), critiqued society, politics, and gender roles with fragmented, chaotic imagery.