Few architectural movements have been as divisive as Brutalism. Born from the Modernist style that prevailed during the first half of the twentieth century, Brutalism, which flourished between the 1950s and 1970s, is characterized by hulking, expressive forms that emphasize materials (often concrete) and construction. A new book, Raw Concrete: The Beauty of Brutalism, aims to shed light on the often misunderstood movement.