Language essentialism is a big sign of
Nazism/Fascism. As per Umberto Eco:
"Ur-Fascism speaks Newspeak.[...] [E]lements of Ur-Fascism are common to different forms of dictatorship. All the Nazi or Fascist schoolbooks made use of an impoverished vocabulary, and an elementary syntax, in order to limit the instruments for complex and critical reasoning. But we must be ready to identify other kinds of Newspeak, even if they take the apparently innocent form of a popular talk show"