Columbia subject headings:
Ethnopsychology--United States.
United States--Civilization--1970---Psychological aspects.
Harvard subject headings:
Columbine High School (Littleton, Colo.)
Ethnology--United States
Ethnopsychology--United States.
Psychoanalysis--United States.
School violence United States.
September 11 Terrorist Attacks, 2001--Psychological aspects
Social psychology--United States.
Subconsciousness.
United States--Civilization--1970---Psychological aspects.
Violence--United States
Princeton subject headings:
Ethnopsychology--United States.
United States--Civilization--1970--Psychological aspects.