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Terror attacks are followed by public shock and disorientation. Previous research has found that people use social media to collectively negotiate responses, interpretations, and sense-making in the aftermath of terror attacks. However, the role of ideologically motivated discussions and their relevance to the overall discourse have not been studied. This paper ad-dresses this gap and focuses specifically on the far-right discourse, comparing it to the general public Twitter discourse following the terror attack in Hanau in 2020. A multi-method ap-proach combines network analysis and structural topic modelling to analyse 237,000 tweets. We find responsibility attribution to be one of the central themes: The general discourse pri-marily voiced sympathy with the victims and attributed responsibility for the attack to far-right terror or activism. In contrast, the far right – in an attempt to reshape the general narra-tive – raised a plethora of arguments to shift the attribution of responsibility from far-right activism towards the (political) elite and the personal circumstances of the shooter. In terms of information sharing and seeking, we demonstrate that new information was contextualised differentially depending on the ideological stance. The results are situated in the scientific dis-course concerning differences in social media communication ensuing terrorist attacks.

This document reports findings from a Rapid Evidence Assessment conducted on the role of mass and social media during and after terrorist events. It is designed to bring together and synthesize insights and evidence from the available published research literature to inform future policy and practice development. By promoting understanding of how different forms of mediated communication shape what happens in the aftermath of terror events, the work seeks to reflect changes in both the conduct of terrorism and the contemporary information environment. In particular, the spread of social media has had disruptive and transformative impacts upon press and broadcast journalism, and the ways
that terrorist violence is performed.

What explains online radicalization and support for ISIS in the West? Over the past few years, thousands of individuals have radicalized by consuming extremist content online, many of whom eventually traveled overseas to join the Islamic State. This study examines whether anti-Muslim hostility might drive pro-ISIS radicalization in Europe. Using new geo-referenced data on the online behavior of thousands of Islamic State supporters in France, the United Kingdom, Germany, and Belgium, I study whether the intensity of anti-Muslim hostility at the local (neighborhood/municipality) level is linked to pro-ISIS radicalization on Twitter. Results show that local-level measures of anti-Muslim animosity correlate significantly and substantively with indicators of online radicalization, including posting tweets sympathizing with ISIS, describing life in ISIS-controlled territories, discussing foreign fighters, and expressing anti-West sentiment. High-frequency data surrounding events that stir anti-Muslim hostility — terrorist attacks and anti-Muslim protests in Europe — show the same pattern.

Considerable time has been spent examining how groups like AQAP and ISIS used their online magazines to reach and radicalize individuals in Western democratic states. This paper continues this investigation but shifts its analysis to focus on the ‘how-to’ or instructional content of these publications, an understudied part of the literature. One of the stated goals of these magazines was to provide tactical know-how and assist supporters conducting terror plots in their home states. The question: did the tactics outlined in the magazines materialize in actual plots/attacks and how quickly were they put into practice? The paper examines this question by creating an overview of the tactics which appear in these publications and cross referencing them with a dataset of 166 Islamist-inspired homegrown terror plots/attacks in 14 Western democratic states to determine if, and when, they first appeared in relation to their publication date. It concluded that while some of the suggested strategies did appear following their publication, often it occurred after considerable time had elapsed. This suggests the instructional content did not resonate with readers in real time.

The strategy of jihadist groups is based on objectives that are sometimes global. Specifically, many of these groups argue that Muslims, wherever they live, should fight for the establishment of an Islamic state or, at least, for such a state to be possible elsewhere. Therefore, taking advantage of the emergence of the Internet, they initiated an equally universal narrative strategy, with the production of a great deal of content, especially audiovisual texts. The effects of this material are known and, unfortunately, may be behind the terrorist actions of various individuals in many countries. Hence the concern of academics lies with their analyses and with the development of methodologies that can successfully deal with large amounts of multimodal information. The present research, therefore, aims to apply a quantitative procedure to the analysis of jihadist propaganda. Specifically, the authors have analysed 2,211 videos belonging to different terrorist groups, by applying an image classification algorithm. The results show that this type of approach has realistic possibilities of providing relevant information about this corpus – when realized, they may help to create automated analytical tools capable of dealing with the enormous amount of information that can be disseminated on-line.

As a consequence of numerous extreme-right terror attacks in which the perpetrators posted their manifestos and attack life streams on online platforms adjacent to the video gaming community, as well as radicalized within that environment to a significant degree (e.g., Christchurch, New Zealand; Halle, Germany), increasing scholarly and policymaker interest is focusing on far-right radicalization and recruitment within online video game environments. Yet little empirical insights exist about the specific engagement between right-wing extremists and their potential recruits on these platforms. This study presents findings from a qualitative exploration of German police-investigation files for two children who radicalized on gaming platforms to become involved in extreme-right criminal behavior, including the plotting of a terrorist attack. The study demonstrates the importance of online and offline factor interaction, especially regarding the role of familiar criminogenic factors, as well as the social–emotional bonding between potential recruits and extremist gamers created through shared gaming experiences that lead to high-intensity extremist radicalization aimed at offline behavioral changes. The study did not find evidence for strategic organizational far-right recruitment campaigns, but rather multidirectional social-networking processes which were also initiated by the potential recruits.