From ex-recruit "Giselle" at http://www.lyndonlarouchewatch.org/giselle.htm
In order to reinforce the idea of a conspiracy, it is also necessary to cultivate the idea of secrecy within the group. This is where it becomes important to create an artificial hierarchy based on criteria of loyalty to the leader. His disciples never know everything…and in any case they will be taught only what they should ever need to know. This defiance in regard to the “base” of the structure will from time to time require a pseudo court case, or what we could call “purges”.