人心はついてこないって英語でなんて言うの？

• "Won't win the hearts and minds of the people."
  "won't" = "will not"
  "won't win ~" 「〜はついてこない」
  "the hearts and minds of the people" 「人心」・「 人々の心」

"Radical demonstrations won't win the hearts and minds of the people."
「過激なデモを行っても人心（民衆の心）はついてこない」

"人心はついてこない"
- Won't garner public sympathy. (民衆の同情？）
- Will not win the heart of the people.

過激なデモを行っても人心（民衆の心）はついてこない
- Extreme protests won't garner public sympathy.
- Taking demonstrations to the extreme will not win the heart of the people.