Columbia subject headings:
Art and society--History--20th century.
Art and society--History--21st century.
Art, Modern--20th century.
Art, Modern--21st century.
Protest movements--History--20th century.
Protest movements--History--21st century.
Harvard subject headings:
Art and society--History--20th century
Art and society--History--21st century.
Art, Modern--20th century
Art, Modern--21st century
Protest movements--History--20th century.
Protest movements--History--21st century.
Princeton subject headings:
Art and society--History--20th century.
Art and society--History--21st century.
Art, Modern--20th century.
Art, Modern--21st century.
Protest movements--History--20th century.
Protest movements--History--21st century.