The term appropriation art came into common use in the 1980s with artists such as Sherrie Levine, who addressed the act of appropriating itself as a theme in art. Levine often quotes entire works into her own, for example photographing photographs of Walker Evans. Challenging ideas of originality, drawing attention to relations between power, gender and creativity, consumerism and commodity value, the social sources and uses of art, Levine plays with the theme of "almost same". Wikipedia