マスムーブメント

noun

mass movement

Refers to a large-scale social, political, or cultural movement involving many people. A direct loan from English, used in similar contexts.

• 環かん境きょう保ほ護ごのマスムーブメントが世せ界かい中じゅうで広ひろがっている。

  The environmental protection mass movement is spreading around the world.