détournement

thumb|A Marlboro cigarette advertisement on a billboard détourned by the group [[BUGAUP, by defacing the cowboy image and modifying the text to read "It's a bore."]]

A détournement (), meaning "rerouting, hijacking" in French, is a technique developed in the 1950s by the Letterist International, and later adapted by the Situationist International (SI), that was defined in the SI's inaugural 1958 journal as "[t]he integration of present or past artistic productions into a superior construction of a milieu. In this sense there can be no situationist painting or music, but only a situationist use of those means. In a more elementary sense, détournement within the old cultural spheres is a method of propaganda, a method which reveals the wearing out and loss of importance of those spheres."