Extremism Islamic State Social Media Influence Online Extremism Youth Radicalization Youth Involvement Jihadism Rehabilitation Public Safety Case Studies Deradicalization Programs Refugees Community Safety Reintegration IS Members Fundraising Activities Al Qaeda Jihadist Networks Personal Accounts Public Order Anti-National Activities Support Networks Women in Terrorism Desradicalization Programs Islamic Extremism Ideological Leaders Overground Workers IS Membership Extremist Groups Reintegration of Former Extremists Factors of Radicalization Online Radicalization Factors of Risk Deradicalization Islamist Movements IS Fighters Public Sentiment Foreign Fighters Terrorist Organizations Child Soldiers Soft Targets Militant Activities Judicial System Reintegration of former extremists Youth Recruitment ISIS Affiliates Digital Networks Omar Ben Laden Social Media Support for Terrorism Islamist Extremism Personal Stories Political Violence Extremist Ideology European Fighters