The people are acting in a social organization by membership. They perform their responsibilities within the system, exactly like the organs in the human body. The human body will function normally as far as its nutrition is varied and well balanced. The different organs then respond correctly and perform their duties. It's exactly the same thing for a social system in a sense that satisfaction is obtained by everybody through the cooperation and division of labour. The human body experiences a lot of infections, and some of them die because the body reacts by immunization. Other infections need an antibiotic treatment, and sometimes, an ablation is necessary, to avoid death from a cancer or gangrene. When we come to a social system, conceived as a successful adaptation of a collectivity, it cannot succeed, unless some people have power over people, exactly like the complex brain has a natural ability to conduct the body. The organs are added values for the body, as are, religion, traditions, metaphysical beliefs, and culture, for the social system. If we consider that one vital value is missing, like the eyes for the body or some moral philosophies for the society, then the brain and the social action will lose one of their important sensors, and the reality becomes senseless. When the reality becomes senseless, then a social system is threatened by rebellion like the virus for the body, or revolution like the cancer. It may happen that a social system is pushed beyond the limits of equilibrium like successive years of drought, destroying the economies basis, war which absorbs the resources of manpower, or internal conflict. In such given unbalanced conditions and the presence of "accelerators", like military weakness or disarray, sheer confidence, and strategies action, the rebellion takes place. Now, do all rebellions with or without a strategy succeed. Are they all legitimate? Of course no, but they vary from one another, according to the size and quality of the armed forces the rebels must overcome, and also of their professionalism. Rebellion is extremely difficult to defeat once it has grown so far in a social System. Mao Tse-tung said "Because guerrilla warfare basically derives from the masses and is supported by them, it can neither exist nor flourish if it separates itself from their sympathies and cooperation".