It's only more or less 1/3rd of the population this applies toward. Another 1/3rd will not get sucked in just easily follow along for prosocial reasons and the final 1/3rd who's moral IQ (innate personality) is high enough to not get sucked in at all may probably fight against it if allowed.
Every genocide and disgusting mass event across the history of mankind exists here.
Progressivism falls hard in to the first 1/3rd category.