One of the most obvious characteristics of Iran’s protests in September 2022 is the emergence of a type of cyber activism that, unlike mass activism, is formed first in cyberspace. Networks have redefined social action and structure in our societies and have important consequences on production processes, power, and culture, challenging political systems, and creating legitimacy crises. The subject of the present research is important because cyber activism has an external aspect and has changed the shape of Iran’s social movements. This article is based on the Twitter data analysis method and using MAXQDA. Referring to Castells’ network society theory, it addresses this question: What role did the Twitter play in September 2022 in Mahsa Amini’s social movement? This article shows that the Twitter, in the context of existing dissatisfactions and in the absence of active organizations and parties, has led to an increase in cyberactivism in Iran. This cyberactivism encompasses mass self-communication, occupation of urban space, horizontal leadership, globalization of messages, mobilization and guidance of public opinion, nationalism, the subjectivity of women, and their identification has been its external manifestation.

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