Article 27 of the Constitution of the Islamic Republic of IranPublic gatherings and marches may be freely held, provided arms are not carried and that they are not detrimental to the fundamental principles of Islam.
(The movement has been non-violent and fully in compliance with the principles of Islam)
Articles of the Cairo Declaration on Human Rights in Islam
3(d) Safety from bodily harm is a guaranteed right. It is the duty of the state to safeguard it, and it is prohibited to breach it without a Shari'ah-prescribed reason.
11(a) Human beings are born free, and no one has the right to enslave, humiliate, oppress or exploit them, and there can be no subjugation but to Allah the Almighty.
18(a) Everyone shall have the right to live in security for himself, his religion, his dependents, his honour and his property.
(b) Everyone shall have the right to privacy in the conduct of his private affairs, in his home, among his family, with regard to his property and his relationships. It is not permitted to spy on him, to place him under surveillance or to besmirch his good name. The State shall protect him from arbitrary interference.
(c) A private residence is inviolable in all cases. It will not be entered without permission from its inhabitants or in any unlawful manner, nor shall it be demolished or confiscated and its dwellers evicted.
22(a) Everyone shall have the right to express his opinion freely in such manner as would not be contrary to the principles of the Shari'ah.
(b) Everyone shall have the right to advocate what is right, and propagate what is good, and warn against what is wrong and evil according to the norms of Islamic Shari'ah.
(c) Information is a vital necessity to society. It may not be exploited or misused in such a way as may violate sanctities and the dignity of Prophets, undermine moral and ethical Values or disintegrate, corrupt or harm society or weaken its faith.
23(a) Authority is a trust; and abuse or malicious exploitation thereof is explicitly prohibited, in order to guarantee fundamental human rights.
(b) Everyone shall have the right to participate, directly or indirectly in the administration of his country's public affairs. He shall also have the right to assume public office in accordance with the provisions of Shari'ah.--------------------------
Article 20.1 of the Universal Declaration of Human Rights
Everyone has the right to freedom of peaceful assembly and association.
(Iran is a signatory to the UDHR)