"the abandonment of representation everywhere in the world"
Worth checking out Socialist Realism, both the thing that motivated the CIA to fund and promote non-representative art and help develop it into a fad, and also a large corpus of representative art that existed when you imagine it did not (there's many others besides, non-representative art has always been a small niche relative to all art produced which is primarily abstract or representative once you start to look outside galleries and museums).
Worth checking out Socialist Realism, both the thing that motivated the CIA to fund and promote non-representative art and help develop it into a fad, and also a large corpus of representative art that existed when you imagine it did not (there's many others besides, non-representative art has always been a small niche relative to all art produced which is primarily abstract or representative once you start to look outside galleries and museums).