Columbia subject headings:
Apologizing--Social aspects.
Collective memory.
Reconciliation--Political aspects.
Reconciliation--Social aspects.
Harvard subject headings:
Civil society--History--Congresses.
Civilization, Modern--20th century--Congresses
Civilization, Modern--21st century--Congresses
Collective memory--Political aspects--History--Congresses.
Europe--History--20th century--Congresses.
Europe--History--21st century--Congresses.
Reconciliation--History--Congresses.
Princeton subject headings:
Apologizing--Social aspects.
Collective memory.
Reconciliation--Political aspects.
Reconciliation--Social aspects.