Columbia subject headings:
Politics and culture--United States--20th century.
Popular culture--Political aspects--United States.
United States--Civilization--20th century.
United States--Civilization--21st century.
United States--Politics and government--20th century.
United States--Politics and government--21st century.
Harvard subject headings:
Popular culture--Political aspects--United States.
United States--Civilization--20th century.
United States--Civilization--21st century.
United States--Politics and government--20th century.
United States--Politics and government--21st century.
Princeton subject headings:
Popular culture--Political aspects--United States.