Some facts from art history to put it all in perspective.
At the same time, the full-bore urban decay that would define the decade was setting in. Graffiti, which observers hadn’t thought of as much besides vandalism before, became a self-conscious art movement.
The 1973 Whitney Biennial was actually the first Whitney Biennial, in the sense that, it previously been the Whitney Annual. In a reaction to the increasing pluralism of art that was also considered a wild revision of modern-art standards, different mediums were shown together for the first time. The 1973 show featured 220 artists, including names-you-still-know like Helen Frankenthaler, Donald Judd, and Joan Mitchell—though now-little-known painter Dan Christensen was the most-commented-upon artist in the show.
–Ben Davis, Artnet