Encompasses varying stylistic approaches that emphasize intense personal expression. Renouncing the stiff bourgeois social values that prevailed at the turn of the 20th century, and rejecting the traditions of the state-sponsored art academies, Expressionist artists turned to boldly simplified or distorted forms and exaggerated, sometimes clashing colors. As Expressionism evolved from the beginning of the 20th century through the early 1920s, its crucial themes and genres reflected deeply humanistic concerns and an ambivalent attitude toward modernity, eventually confronting the devastating experience of World War I and its aftermath.