Columbia subject headings:
Harvard subject headings:
Athens (Greece)--Politics and government--21st century.
Financial crises--Germany--Frankfurt am Main--History--21st century.
Financial crises--Greece--Athens--History--21st century.
Frankfurt am Main (Germany)--Politics and government--21st century.
Political violence--Germany--Frankfurt am Main--History--21st century.
Political violence--Germany--Frankfurt am Main--Psychological aspects--History--21st century.
Political violence--Greece--Athens--History--21st century.
Political violence--Greece--Athens--Psychological aspects--History--21st century.
Protest movements--Germany--Frankfurt am Main--History--21st century.
Protest movements--Greece--Athens--History--21st century.
Princeton subject headings:
Athens (Greece)--Politics and government--21st century.
Financial crises--Germany--Frankfurt am Main--History--21st century.
Financial crises--Greece--Athens--History--21st century.
Frankfurt am Main (Germany)--Politics and government--21st century.
Political violence--Germany--Frankfurt am Main--History--21st century.
Political violence--Germany--Frankfurt am Main--Psychological aspects--History--21st century.
Political violence--Greece--Athens--History--21st century.
Political violence--Greece--Athens--Psychological aspects--History--21st century.
Protest movements--Germany--Frankfurt am Main--History--21st century.
Protest movements--Greece--Athens--History--21st century.