I think one could add also social proof as fourth element.
As the mass of believers grows the phenomenon becomes self perpetuating up to a point as people are wired to imitate things they percieve in others - were that a belief or skill.
Control is partly caused by the group's self control, and partly by power hungry political figures at the "top" of the movement - leaders if the movement is organized, or just "thought leaders" if the movement is less organized.
