Columbia subject headings:
Atrocities--Psychological aspects.
Genocide--Psychological aspects.
Memory--Social aspects.
Social history--20th century.
Victims of crimes--Psychology.
Harvard subject headings:
Atrocities--Psychological aspects.
Genocide--Psychological aspects
Memory--Social aspects.
Social history--20th century
Victims of crimes--Psychology
Princeton subject headings:
Crimes against humanity.
Genocide.