Columbia subject headings:
Populism--European Union countries.
Right-wing extremists--European Union countries.
Harvard subject headings:
Europe--Politics and government--21st century.
Pupulism--European Union Countries.
Right-wing extremists--European Union Countries.
Princeton subject headings:
Conservatism--Europe.
Europe--Politics and government--21st century.
Fascism--Europe.
Right and left (Political science)--Europe.
Right-wing extremists--Europe.