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Internet Communication Technologies (ICTs) have become increasingly popular for social movements of all kinds. Social movement organizations (SMOs) use them to interact and mobilize also across borders. Previous research has highlighted the opportunities for transnational networking and the resulting reduction in the importance of local dependency for SMOs. One movement that combines local direct action with the goal of an international network of activists is Antifa. Single case studies have highlighted that local demonstrations and networks are still vital for antifascist groups. However, studies that examine the influence of spatial dynamics on building an international (digital) network beyond focusing on a single country are still lacking. This study, therefore, examines the impact of proximity on forming digital connections among 355 unique European antifascist groups. Using Exponential Random Graph Modeling (ERGM), we examine the hyperlink network across Europe via the groups’ online presence. The findings reveal that the languages of the groups and the geographical distance between them are significant predictors for the probability of displayed hyperlink connections. These results demonstrate the relevance of proximity theories in the field of digital activism. The study contributes to a deeper understanding of spatial dynamics in shaping online networks, reinforcing the importance of space in contemporary network analysis in social movements studies.

This protocol outlines a systematic review that aims to understand the effectiveness of educational programmes, delivered both online and offline, designed to prevent and counter the effects of online violent extremist propaganda in multiple languages. The primary objective is to assess the impact of interventions on reducing violent extremist attitudes, beliefs and behaviours. A secondary objective is to identify key factors that influence the effectiveness of these interventions. Eligible studies will include randomised controlled trials and quasi‐experimental designs that evaluate interventions, such as media literacy initiatives, counter‐narratives, alternative narratives and gamified approaches. The analysis will synthesise outcomes using meta‐analysis and narrative synthesis, concentrating on attitudinal and behavioural extremism measures. By addressing a significant research gap, this review aims to provide actionable insights for developing educational strategies to mitigate online extremist propaganda’s spread, impact and radicalising influence.

Previous research has documented that the internet plays an increasingly important role in facilitating involvement in terrorism. However, the level of specificity of this literature is low. Advancing current insights, we examined how three concrete examples of active (i.e., generate/disseminate terrorist propaganda; interact with co-ideologues) and two examples of passive (i.e., learn about terrorist ideologies/actors; learn tactical information) internet use are related to distinct distal and proximal dynamics of radicalisation. Additionally, we assessed associations between the different types of internet use and the likelihood of having planned/committed a terrorist attack. We analysed a unique dataset based on closed-source risk assessment reports of individuals convicted of terrorism(-related) offences in England and Wales (N = 377). Results of this secondary data analysis pointed to three internet use repertoires: (1) learning about tactical information and terrorist ideologies/actors; (2) only learning about terrorist ideologies/actors; (3) active internet use and learning about terrorist ideologies/actors. Learning about tactical information and terrorist ideologies/actors was (compared to the other two repertoires) associated with a higher likelihood of having planned/committed an act of terrorism. Additionally, levels of capability were higher if individuals learnt both tactical and ideological information online compared to using the internet actively and browsing content about terrorist ideologies/actors. Individuals characterised by either internet use repertoire did, however, not vary significantly regarding their levels of engagement with extremist ideas and actors and the degree to which they had developed an extremist mindset. The results can inform terrorist/violent extremist risk assessment.

This Element aims to better understand the role of the internet in the radicalization process, focusing on how online factors contribute to self-radicalization. Specifically, it examines the neurocognitive process of online radicalization by analyzing the impact of terrorist and extremist propaganda videos on individuals’ cognitive empathy using electroencephalography (EEG). Ultimately, this research aims to provide a more comprehensive understanding of online radicalization and the psychological effects of exposure to extremist content on the internet.

This article examines the digital convergence of distinct extremist milieus involved in the Patriotic Union’s thwarted plot to overthrow the German government in December 2022. By specifically investigating the merging process of involved digital networks of the German Corona-protest and Sovereign Citizens milieu over time, this article analyses the event’s broader implications for the German extremism landscape linked to the transnational evolution of anti-government extremism (AGE). Empirically, this study explores the relationship between issue-driven AGE (Querdenken) and ideologically driven AGE (Reichsbürger) by conducting a longitudinal network analysis of 785,865 Telegram messages from the attempted storming of the Reichstag (August 2020) until the events of December 2022. The analysis reveals a 25.6 percent overlap between Querdenken and Reichsbürger channels, indicating a formation process of a new small, yet notable AGE network. Further, the article finds that the highest spikes of convergence occur in intervals correlating with large-scale offline events, suggesting a feedback loop of offline encounters and online convergence. Thus, this study contributes not only to a dearth of literature on German-centred extremism and transnational debates on their changing nature reflected in the growing body of research on AGE. This study also offers empirical insights into group-level online radicalisation processes.

This article brings together expert assessments concerning the relationship between children and online extremism, to help inform scholars and policymakers seeking to address the effects of early childhood exposure to extremism content. Our approach comprised of eight semi-structured interviews involving experts, practitioners, and policymakers offering their professional assessments on the relationship between children and online extremist content. Findings include the role of online misogyny and its psychological appeal to children and adolescents in digital media environments, especially when viewed alongside or expressed in politically benign online spaces in the children’s lifestyle or development. Results emphasised the evolving sociotechnical contexts where children are being exposed to extremist content, chiefly the rapid development in online gaming communities and allied innovation in gaming industries. The experts interviewed see interdisciplinary collaboration with health, cognitive-psychological, and neuro-developmental sciences specific to child development and psychology as essential for understanding the effects of online extremist content on children in future studies. Their recommendations centred on prioritising digital media literacy in schools, promoting community engagement and parental discussions about child safety online, incentivising companies responsible for products used by children to implement age verification and advanced moderation policies, and supporting localised culture figures in the children’s lifestyle and development alongside social workers and childhood educators. Findings also suggest that current school systems and curricula lack comprehensive prevention or counter-measures against growing radicalisation in child settings. Participants offered ideas on addressing children’s exposure to online extremist content, yet gaps remain in implementing effective strategies within educational settings and beyond.