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Brutalism, a term coined by British architectural critic Reyner Banham, describes an architectural style that emerged in the 1950s and 1960s. It is characterized by the use of raw concrete, often left unfinished, and a focus on functionalism over aesthetics. Brutalism was popularized by architects such as Le Corbusier and Marcel Breuer, and was often used in the construction of public buildings, such as schools, libraries, and government offices.