Columbia subject headings:
Harvard subject headings:
Nineteen eighties--Congresses.
Protest movements--United States--History--20th century--Congresses.
Social movements--United States--History--20th century--Congresses.
United States--Foreign public opinion--Congresses.
United States--Social conditions--1980-2020--Congresses
Princeton subject headings:
Protest movements--History--20th century.