How do you say “radicalism” in Vietnamese?

Vietnamese words for “radicalism”

• chủ nghĩa cấp tiếnListennoun
  Hanoi [t͡ɕu˧˩ ŋiə˦ˀ˥ kəp̚˧˦ tiən˧˦] · Saigon [cʊw˨˩˦ ŋiə˨˩˦ kəp̚˦˥ tiəŋ˦˥]chủ dipping nghĩa creaky rising cấp rising tiến rising

  radicalism; progressivism

  for “radicalism” meaning: Any of various radical social or political movements that aim at fundamental change in the structure of society