Dada Group (1921 - 1922), a gelatin silver collage depicts leading members of the movement holding
various objets d'art, including a portrait of the artist himself, affixed carefully on the surface.
Dada - ists employed shock - tactics and absurdity to produce totally irrational or meaningless artworks and «performances», including sculpture and early installations which they often constructed using
various objets trouvés (found objects) of which Marcel Duchamp's «readymades» were a sub-category.