Crowd psychology applies across all fields including entertainment, politics, education, government, commerce, finance, health care and religion. A society that is more aware, and skeptical, is more resistant to manipulation. Edward Bernays, known as the father of public relations and propaganda, famously argued that “...the ideas conveyed by the words will become part and parcel of the people themselves.”

https://www.psychologytoday.com/gb/blog/the-media-psychology-effect/202504/the-psychology-of-crowds