(technique, -present)

Found objects, ripped posters, radical collages: as part of the New Realism movement of the early 1960s. Décollage is the opposite of collage; instead of an image being built up of all or parts of existing images, it is created by cutting, tearing away or otherwise removing, pieces of an original image.
De-coll/age was a term invented by Wolf Vostell after he saw (a version of) it used in a newspaper article to describe the crash of an airplane that had taken place at takeoff.

Artists Decollage: