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.
Dadaism preceded Surrealism, where the theories of Freudian psychology led to the depiction of the dream and the unconscious in art in work by Salvador Dalí.
Kandinsky's introduction of non-representational art preceded the 1950s American Abstract Expressionist school, including Jackson Pollock, who dripped paint onto the canvas, and Mark Rothko, who created large areas of flat colour.
[2] Warhol also minimised the role of the artist, often employing assistants to make his work and using mechanical means of production, such as silkscreen printing.
Another pop artist, Keith Haring, used cartoons and graffiti as a means of political activism, fighting against the stigma surrounding gay men and drug addicts during the 1980 AIDS epidemic.