Columbia subject headings:
African Americans--Civil rights--History.
African Americans--Civil rights.
African Americans--History--19th century.
African Americans--History--20th century.
African Americans--History.
African Americans--Politics and government.
African Americans--Social conditions.
Black lives matter movement.
United States--Race relations.
Harvard subject headings:
African Americans--Civil rights--History
African Americans--History
Princeton subject headings:
African Americans--Civil rights--History.
African Americans--History.