Online Vigilantism and Moral Justification

Abstract

Online vigilantism refers to the act of individuals or loosely-organized groups using digital platforms to identify, shame, expose, or punish alleged wrongdoers outside formal legal institutions. This phenomenon has expanded rapidly through social media mobilization, hacktivism, doxxing campaigns, cyber harassment, and crowdsourced investigations. While some view these actions as digital empowerment or grassroots justice, online vigilantism raises concerns regarding due process, misinformation, mob psychology, moral overreach, and psychological harm to both targets and participants. This paper analyzes the moral psychology behind online vigilantism, including moral outrage, group identity, perceived justice deficits, anonymity-induced disinhibition, revenge motives, and social validation. A Behavioral Ethical Vigilantism Model is proposed to map pathways between outrage, collective judgment, and digital punishment.