Columbia subject headings:
Harvard subject headings:
School violence--History--20th century.
School violence--History--21st century.
Violence in mass media--History--20th century.
Violence in mass media--History--21st century.
Youth and violence--History--20th century.
Youth and violence--History--21st century.
Princeton subject headings:
School violence--History--20th century.
School violence--History--21st century.
Violence in mass media--History--20th century.
Violence in mass media--History--21st century.
Youth and violence--History--20th century.
Youth and violence--History--21st century.