Case study choices

Why write about Martha Rosler (an American) and her Garage Sale in regards to New Realist Arman, and Arte Povera Kounellis? Wouldn't pop art be a better example, such as the issue of consumerism? Here are some of the reasons why:

1. all 3 artworks (Full Up, 12 Horses, and Garage Sale) are gestures which cannot be bought and sold by collectors; they can be repeated and imitated, but exist within a special place in the art market
2. Arman deals with accumulation, which is the theme of much of his oeurve, Garage Sale is also an accumulating gesture.
3. Kounellis deals with the performative, of living animals in some of his art (the horses, the parrot); as well as relating to a history, in Rosler's sense a history of vintage objects.