20th-century art abstract (or non-representational) art. Cubism, generated by Picasso, Braque, Metzinger, Gleizes and others rejected the plastic norms of the Renaissance by introducing multiple perspectives into a two-dimensional image. Futurism incorporated the depiction of movement and machine age imagery. Dadaism, with its most notable exponents, Marcel Duchamp, who rejected conventional art styles altogether by exhibiting found objects, notably a urinal, and too Francis Picabia, with his "Portraits Mécaniques". Parallel movements in Russia were Suprematism, where Kasimir Malevich also created non-representational work, notably a black canvas. The Jack of Diamonds group with Mikhail Larionov was expressionist in nature. Dadaism preceded Surrealism, where
Crystal Cubism clearest and most intelligible definition of Cubism. At the outset of the First World War many artists were mobilized: Metzinger, Gleizes, Braque, Léger, de La Fresnaye, and Duchamp-Villon. Despite the brutal interruption, each found the time to continue making art, sustaining differing types of Cubism. Yet they discovered a ubiquitous link between the Cubist syntax (beyond pre-war attitudes) and that of the anonymity and novelty of mechanized warfare. Cubism evolved as much a result of an "evasion" of the inconceivable atrocities of war as of nationalistic pressures. Along with the evasion came the need to diverge further and further away