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The purpose of this paper is to explore the role of interest groups in the formation of online echo chambers and to determine whether interest groups’ use of social media contributes to political polarization.

This study used a content analysis of nearly 10,000 tweets (from 2009 to 2014) by the Brady Campaign to Prevent Gun Violence and the National Rifle Association to examine how groups engage with their political allies and opponents.

The results indicated that both groups engaged primarily with their supporters on Twitter while avoiding confrontation with their opponents. In particular, both groups used hashtags designed to reach their supporters, retweeted messages almost exclusively from other users with whom they agreed, and disproportionately used Twitter handles of their allies, while avoiding the use of Twitter handles of their opponents.

The findings suggest that interest groups’ use of social media accelerates the formation of online echo chambers, but does not lead to an increase in polarization beyond existing levels, given practices that maintain civility between opposing sides.

Popular opinion expresses fear that accessing radical Islamic content and connecting with extremist networks through Internet functionalities causes radicalization and recruitment to commit terrorist acts. Anecdotal evidence has been used to support this assertion. The opinion assumes the Internet creates a new path that drives radicalization and recruitment. Whether computer-mediated communication (CMC) and Internet functionalities cause individuals to radicalize has not been thoroughly studied. This thesis explores whether a correlation can be found to attribute radicalization to radicalizing content and extremist networks accessed through CMC and Internet functionalities. A framework is used to evaluate vulnerabilities identified by the psychological, sociological and social-psychological elements of radicalization against the radicalization process, personal history, and the presence of radicalizing conventional communication and extremist contact. The analysis finds three cases that may support a conclusion that Internet radicalization is possible; however, the importance of root causes and individual vulnerabilities may have a greater impact. Since some circumstances involving CMC may increase the likelihood of radicalization, the fear of Internet radicalization may be reasonable, but the number of incidents validating that fear makes the threat unlikely and appears more like a phantom menace than a real threat.

Extant literature on White Nationalism illustrates the myriad of social issues members of this racialist extremist group presently recognize as threatening the continuation of the white race and the preservation of white heritage (Swain 2002). One of these threats includes the high incidences of black-on-white violent crime within the United States. The March 2008 murder of UNC student body president Eve Carson, a 22-year-old white woman, by two young black males elicited heated discussion among White Nationalists. This paper analyzes, via content analysis, the thematic discourse surrounding Carson’s homicide among White Nationalists on two popular White Nationalist websites. Functionalist theory guides this investigation in the attempt to illustrate how White Nationalists use scientific theories of criminality and government crime statistics as tools for justifying their racist beliefs. Also, this study intended to answer whether or not Carson’s murder prompted an increase in online membership on the two websites used for the analysis. Moreover, this study sought to unearth thematic discourse which involved attacking whites who do not subscribe to White Nationalism; Eve Carson as either a sacred or profane symbol of whiteness; criticism of government policies, media, and the criminal justice system; evoking fear within the White Nationalist community; and calls for white solidarity and action. This analysis suggests that White Nationalists primarily used Carson’s death as an opportunity to attack whites who do not subscribe to White Nationalist beliefs.

Background
Despite the prominent role that digital media play in the lives and mental health of young people as well as in violent radicalization (VR) processes, empirical research aimed to investigate the association between Internet use, depressive symptoms and support for VR among young people is scant. We adopt a person-centered approach to investigate patterns of digital media use and their association with depressive symptoms and support for VR.

Methods
A sample of 2,324 Canadian young people (Mage = 30.10; SDage = 5.44 ; 59% women) responded to an online questionnaire. We used latent profile analysis to identify patterns of digital media use and linear regression to estimate the associations between class membership, depressive symptoms and support for VR.

Results
We identified four classes of individuals with regards to digital media use, named Average Internet Use/Institutional trust, Average internet use/Undifferentiated Trust, Limited Internet Use/Low Trust and Online Relational and Political Engagement/Social Media Trust. Linear regression indicated that individuals in the Online Relational and Political Engagement/Social Media Trust and Average Internet Use/Institutional trust profiles reported the highest and lowest scores of both depression and support for VR, respectively.

Conclusions
It is essential to tailor prevention and intervention efforts to mitigate risks of VR to the specific needs and experiences of different groups in society, within a socio-ecological perspective. Prevention should consider both strengths and risks of digital media use and simulteaneously target both online and offline experiences and networks, with a focus on the sociopolitical and relational/emotional components of Internet use.

Profiling has its traditions in criminal investigations where it is used to assist in apprehending an offender by examining and attempting to understand his or her psychological motivations and personality. Terrorist specialists and theorists have applied traditional profiling techniques in hopes of distinguishing nonterrorists from terrorists and in an endeavor to understand the motivators for radicalization. However, these attempts have created a divide between the theorists resulting in contradictory data and debate. With the rise of social media, the methods of terrorism have changed. The Islamic State (IS) in particular has tapped into using media, not only to recruit, but as a form of technological combat, which in turn has added to their success and strength. This dissertation introduces the theory of Combat Branding. The findings of this dissertation suggest that it is possible to create a deductive profile of Western IS recruits by beginning with the examination of IS’s Combat Brand. This is a qualitative visual narrative study of official IS media consisting of video and still images. It is my hypothesis that starting with an analysis of the Combat Brand is a missing link to approaching a deductive profile of the intended target audience.

This report represents a first contribution by the Samir Kassir Foundation (SKF) to the ongoing and growing debate on the role of communication in the radicalisation process and the mechanisms to prevent or counter violent extremism (CVE). The primary focus of this research is communication by and about the Islamic State and did not include communication by and about militant Islamist organisations from other ideological and sectarian backgrounds. It is based on qualitative opinion and media consumption research conducted in February and March 2016 with Lebanese audiences in Tripoli, North Lebanon, West Bekaa and among Syrian refugees with the support of the Ministry of Foreign Affairs of the Netherlands under contract No. 28141. The project was implemented by a steering committee led by academic and policy consultant Drew Mikhael and comprised of SKF Executive Director Ayman Mhanna, SKF Programs Coordinator Nassim AbiGhanem, academic and senior researcher Nidal Ayoub and social media communication specialist Marie-Thérèse Corbani. The contents of this report are the sole responsibility of the Samir Kassir Foundation and can in no way be taken to reflect the views of the Ministry of Foreign Affairs of the Netherlands