احسان کیانی - M.A. Political Science, Faculty of Law and Political Science, University of Tehran, Tehran, IRAN.
عباس علی قلی طایفه - M.A. Political Science, Faculty of Law and Political Science, University of Tehran, Tehran, IRAN.
احمد خالقی دامغانی - Assistant Professor, Faculty of Law and Political Science, University of Tehran, Tehran, IRAN.

This article seeks to historical analysis about secession Mojahedin e Khalq Organization from Nehzate e Azadi basis of Parson’s structural functionalism theory. Nehzat e Azadi as a system takes political developments as data and after internal processes, expresses it's decisions as the output. In Parson’s theory, internal and external factors that impressive on environment and system’s values, cause disorder. and this disorder cause that system fail to adaptation its whith environmentaly changes. according to the hypothesis of this research, In the meantime, the agreed between United States of America and Mohammad Reza Shah to overthrow Ali Amini’s government, as external factor affects on environment; and leftist movements in countries like Cuba, Vietnam, Algeria and Palestine, as external factor affects on system’s value. Arrest of Nehzat e Azadi’s leaders, Engineer Mehdi Bazargan, Dr Yadollah Sahabi and Ayatollah Mahmoud Taleghani, as internal factor affects on environment and Engineer Bazargan’s scientism ideas as internal factor on affects system’s value; caused Nehzat’s young members, contrary to the ideas of the early leaders, choose violent struggle. This paper suggests the community structure of Nehzat e Azadi, that aspect in lack of organizational cohesion, was issues that not just didn’t oppose with this internal radicalism rather confirmed that.

Community Construction, MKO, Nehzate-Azadi, Structural Functionalism