Reports

Authored by Jon Lewis, Seamus Hughes, Oren Segal, and Ryan Greer
April 2020

This policy paper focuses on the recent arrests of domestic extremists, as well as current efforts by law enforcement to disrupt and counter the growing influence of racially motivated violent extremist ideology—specifically white supremacy—and analyze the current state of enforcement actions against two domestic networks: The Base and Atomwaffen Division.

In the accompanying policy recommendations, the authors outline administrative actions, legislative and policy changes, and other possible federal and state legal and prosecutorial powers that could allow for a more comprehensive and effective approach to countering these threats. 

Authored by Lorenzo Vidino
January 2020

In his forthcoming book, The Closed Circle: Joining and Leaving the Muslim Brotherhood in the West (Columbia University Press, 2020), Program on Extremism Director Lorenzo Vidino provides critical new perspectives on Muslim Brotherhood in the West gathered from extensive interviews with former members of the group in Europe and North America. 

In this excertped chapter, Dr. Vidino tells the story of Kamal Helbawy, a legendary figure in Islamist circles for more than 60 years and one of the most senior members of the Brotherhood to have ever operated in the West. Helbawy discusses how he joined the Brotherhood in the 1950s and his international work for the group, in addition to his key role in establishing core clusters of the Brotherhood in the West and, ultimately, why he left the organization in 2012. 

Authored by Seamus Hughes, Emily Blackburn, and Andrew Mines
August 2019

This study builds on previous work by the Program's researchers on Americans who travel to join jihadist groups. Using interviews with law enforcement officials and thousands of pages of legal documents, the authors found 36 individuals who traveled or attempted to travel to join jihadist groups outside of Syria and Iraq from 2011 to 2019. These "Other Travelers" predominantly traveled to longstanding hotspots of jihadist activity: the Af-Pak region, Somalia, and Yemen. As the landscape of the Salafi-jihadist movement continues to evolve, this report contributes to the field's understanding of the broader foreign fighter phenomenon.

Authored by Bennett Clifford and Helen Powell
June 2019

Telegram, an online instant messaging service popular among adherents of the Islamic State (IS), remains vital to the organization’s ecosystem of communications. The platform’s functional affordances, paired with relatively lax enforcement of Telegram’s terms of service (ToS), offers IS sympathizers a user-friendly medium to engage with like-minded supporters and content. This report examines 636 pro-IS Telegram channels and groups that contain English-language content collected between June 1, 2017 and October 24, 2018. While this time-bound and linguistically limited sample represents a sliver of the pro-IS ecosystem on Telegram, the subsequent findings have important implications for policymakers assigned to the dual tasks of countering IS’ online foothold and engaging with service providers like Telegram.

Authored by Alexander Meleagrou-Hitchens
October 2018

Salafism, a complex and multifaceted conservative global Islamic movement, has become a topic of increased interest among a range of scholars over the last decade. Although worthy of study in its own right, the Salafi movement often attracts attention because certain components of it provide much of the ideological inspiration for jihadist groups including al-Qaeda and the Islamic State (IS). This study is one of the first to focus solely on Salafism in the United States. Drawing on multiple primary sources, including interviews with leading American Salafis, it provides an overview of the history, evolution, and contours of the movement in America. In doing so, it also offers insights on the genesis of jihadism in the U.S.

Authored by Alexander Meleagrou-Hitchens, Seamus Hughes, and Bennett Clifford
February 2018

This study reflects the most comprehensive, publicly available accounting of Americans who traveled to join jihadist groups in Syria and Iraq since 2011. It identifies 64 travelers, the largest available sample to date. These individuals, and their stories, were uncovered during a multi-year investigation. Authors interviewed law enforcement officials, prosecutors, and defense attorneys, and attended relevant court proceedings. Additionally, they reviewed thousands of pages of legal documents, filing information requests and federal court motions to unseal records where necessary. Finally, the authors conducted several interviews with American travelers who returned from the territories held by the Islamic State (IS).

Authored by Audrey Alexander
October 2017

Until 2016, Twitter was the online platform of choice for English-language Islamic State (IS) sympathizers. As a result of Twitter’s counter-extremism policies - including content removal - there has been a decline in activity by IS supporters. This outcome may suggest the company’s efforts have been effective, but a deeper analysis reveals a complex, nonlinear portrait of decay. Such observations show that the fight against IS in the digital sphere is far from over. In order to examine this change over time, this report collects and reviews 845,646 tweets produced by 1,782 English-language pro-IS accounts from February 15, 2016 to May 1, 2017. This study finds that Twitter’s policies hinder sympathizers on the platform, but counter-IS practitioners should not overstate the impact of these measures in the broader fight against the organization online.

Authored by Sarah Gilkes
December 2016

While there has been a relative surge in the number of U.S. persons radicalized and recruited by the Islamic State in the last five years, other jihadist organizations, primarily al-Qaeda, remain popular and active. This suggests that, while group affiliation matters, the draw of the wider Salafi-jihadist ideology that al-Qaeda, IS, and other like-minded groups adhere to is equally important when analyzing the jihadist threat to America.

Authored by Audrey Alexander
November 2016 

The self-proclaimed Islamic State and other jihadist actors have identified several unique roles for Western women in their radicalization and recruitment efforts. This report finds that, while few conduct violent plots, many disseminate propaganda, donate resources, or travel abroad to offer their support. This report uses a wealth of primary and secondary data to examine the efforts of 25 jihadi women in America from January 2011 to September 2016. 

Authored by Lorenzo Vidino and Seamus Hughes
December 2015

The report consists of two parts. The first examines all cases of U.S. persons arrested, indicted, or convicted in the United States for IS-related activities. This section also looks at the cases of other Americans who, while not in the legal system, are known to have engaged in IS-inspired behavior.

The second examines various aspects of the IS-related mobilization in America. It analyzes the individual motivations of IS supporters, the role of the Internet—in particular, social media—in their radicalization and recruitment processes, whether their radicalization took place in isolation or with like-minded individuals, and the degree of their tangible links to IS.

Authored by Lorenzo Vidino and Seamus Hughes
June 2015

This report examines the status of CVE in the United States and explores what lessons and experiences the European CVE community can offer their American counterparts. The report dives into past efforts to develop local CVE frameworks at the city-level, targeted interventions, and the existing debate within American Muslim communities. The authors cover current challenges for CVE in America, and offer reccomendations for academics, policymakers, and practitioners.