Columbia subject headings:
Harvard subject headings:
Internet--Political aspects--France.
Internet--Political aspects--Germany.
Internet--Political aspects--Italy.
Populism--France.
Populism--Germany.
Populism--Italy.
Right-wing extremists--France.
Right-wing extremists--Germany
Right-wing extremists--Italy.
Princeton subject headings:
Digital humanities.
Europe--Politics and government--1990-.
Social media and journalism--France--1990-.
Social media and journalism--Germany--1990-.
Social media and journalism--Italy--1990-.