Is it art? The works of Marcel Duchamp

The French-born artist Marcel Duchamp (1887-1968) stirred controversy with his provocative pieces that questioned the very concept of what "art" actually is. Correspondent Rita Braver visits the Smithsonian's Hirshhorn Museum for an exhibition of Duchamp's "readymade" pieces that blur the distinction between utilitarian object and high-priced museum piece.

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