Propaganda by Bernays is a good read…
For instance at P 33 it states " In making up its mind, [a group's] first impulse is usually to follow the example of a trusted leader."
There is that trust word.
“There are invisible rulers who control the destinies of millions. It is not generally realized to what extent the words and actions of our most influential public men are dictated by shrewd persons operating behind the scenes.”
https://www.goodreads.com/author/quotes/275170.Edward_L_Bernays
“In place of thoughts it has impulses, habits, and emotions.”