Expressionism is an art and cultural movement of the 20th century.Expressionist artists try to express a feeling with what they create. Colours and shapes are not used in a way people see them, but as the artist feels them.
Expressionism emerged as an 'avant-garde movement' in poetry and painting before the First World War. In the Weimar years it was appreciated by a mass audience, peaking in popularity in 1920s Berlin.