Referencing boredom as being the driving cause behind many a mass movement, here is a quote from Cormac McCarthy’s book The Passenger.

Real trouble doesnt begin in a society until boredom has become its most general feature. Boredom will drive even quietminded people down paths they’d never imagined.

Hoffer argues that a mass movement must provide hope, otherwise it will eventually fail.

Those who would transform a nation or the world cannot do so by breeding and captaining discontent or by demonstrating the reasonableness and desirability of the intended changes or by coercing people into a new way of life. They must know how to kindle and fan an extravagant hope. It matters not whether it be hope of a heavenly kingdom, of heaven on earth, of plunder and untold riches, of fabulous achievement or world dominion. If the communists win Europe and a large part of the world, it will not be because they know how to stir up discontent or how to infect people with hatred, but because they know how to preach hope.

How the frustrated denigrate the present in order to feel better about themselves.

By expatiating upon the incurable baseness and vileness of the times, the frustrated soften their feeling of failure and isolation. It is as if they said: “Not only our blemished selves, but the lives of all our contemporaries, even the most happy and successful, are worthless and wasted.” Thus by deprecating the present they acquire a vague sense of equality.