Columbia subject headings:
Harvard subject headings:
Communication--Political aspects--Congresses.
Democracy--History--21st century--Congresses.
Discourse analysis--Congresses.
Language and languages--Political aspects--Congresses
Political alienation--Congresses.
Princeton subject headings:
Communication in politics--Germany--Congresses.
German language--Political aspects--Congresses.
Political alienation--Germany--Congresses.
Protest movements--Germany--Congresses.