Which term refers to an art movement prominent for its shock value and rejection of norms?

The term that refers to an art movement notable for its shock value and rejection of norms is Dada. Dada emerged as a response to the devastation of World War I, calling into question traditional values in art and society. It embraced absurdity, chaos, and anti-art sentiments, seeking to challenge the conventions of artistic expression.

Dada artists utilized unconventional materials and techniques, often incorporating elements of performance, poetry, and visual art to critique societal issues and the status quo. This movement deliberately sought to provoke and surprise audiences, making it a radical departure from the established norms in art that preceded it.

In contrast, Functionalism is a design philosophy focused on the practical use of objects, Expressionism emphasizes emotional experience over physical reality, and Op Art is known for its optical illusions and explorations of perception. Each of these movements serves different artistic purposes and does not carry the same emphasis on shock value and norm rejection as Dada does.