Columbia subject headings:
Counterrevolutions--History--20th century.
Revolutions--History--20th century.
United States--Politics and government--1963-1969.
Violence--United States--History--20th century.
World politics--1965-1975.
Harvard subject headings:
Counterrevolutions--History--20th century.
Revolutions--History--20th century
United States--Politics and government--1963-1969.
Violence--United States--History--20th century.
World politics--1965-1975
Princeton subject headings:
Counterrevolutions--History--20th century.
Revolutions--History--20th century.
United States--Politics and government--1963-1969.
Violence--United States--History--20th century.
World politics--1965-1975.