Andy Warhol was a prominent American artist and leading figure in the pop art movement. He emphasized everyday popular culture in his work, such as paintings of Campbell's soup cans and images of celebrities like Marilyn Monroe. Warhol used techniques like silkscreening that allowed him to mass produce works of art based on publicity photographs. His 1962 exhibition of 32 canvases of Campbell's soup cans helped define his career by steering his future work towards pop imagery and questioning what constitutes art.