“Abstract Expressionism in the 1950s and Minimalism in the 1960s are especially susceptible to being “co-opted” by both Left and Right because of their visually apolitical or politically ambiguous formalism — the empty slate to be written on at will by political ideologists. As the Culture Wars and the ever-spiraling prices of blue-chip art entrench the Professional Left of universities and journalism against the Corporate Sponsorship of Abstract Expressionism, Minimalism, and Pop Art, the three art movements become identified with mainstream patronage. By the late 1960s, all three are largely abandoned by the Left in the U.S., in favor of Conceptual and Performance Art.”

— Political Art Timeline, 1945-1966: Postwar Art of the Left - The Huffington Post