Understanding the Challenge of Competing Radicalisms
For more than two decades, discussions surrounding religious extremism in Europe have largely been dominated by concerns regarding Islamist radicalisation. The terrorist attacks in Madrid in 2004, London in 2005, Paris in 2015, Brussels in 2016, and Barcelona in 2017 profoundly shaped European security discourse and public perceptions of extremism. Yet contemporary Europe presents a far more complex reality than the one that emerged in the immediate aftermath of those tragedies.
Spain, in particular, offers a unique case study for understanding the evolving nature of religious and identity-based extremism. Located at the crossroads of Europe, North Africa, Christianity, Islam, and the Mediterranean world, Spain has become a laboratory in which multiple forms of radicalisation coexist, compete, and occasionally reinforce one another.
The greatest mistake policymakers, academics, and commentators can make today is to view religious extremism through a single lens. Modern Spain is not merely confronting the challenge of Islamist radicalisation. It is increasingly confronting a broader phenomenon that may be described as reciprocal extremism, whereby different forms of radicalisation feed upon each other in a self-perpetuating cycle.
The Legacy of Jihadist Extremism
The Madrid train bombings of 11 March 2004 remain the deadliest terrorist attack in Spain's modern history. The attacks demonstrated that Spain, despite not being perceived as a primary global target, was vulnerable to transnational extremist networks.
The Rise of Counter-Radicalisation and Far-Right Extremism
Across Europe, a parallel phenomenon has emerged: the growth of anti-Muslim sentiment, xenophobic movements, and forms of far-right extremism that increasingly employ religious and civilisational narratives. These movements frequently portray immigration, multiculturalism, and religious diversity as existential threats to European identity. In doing so, they construct narratives remarkably similar to those employed by the very extremist organisations they oppose. Both sides depend upon fear. Both sides rely upon the construction of enemies. Both sides flourish through narratives of victimhood and cultural siege.
The result is a dangerous process of mutual reinforcement. Each extremist act committed by one side becomes evidence used by the other side to validate its worldview.
Spain and the Dynamics of Reciprocal Radicalisation
Spain's demographic and historical characteristics make it particularly susceptible to this dynamic. The country's rich Islamic heritage, embodied in the history of Al-Andalus, coexists with strong Christian traditions and contemporary debates regarding migration, integration, and national identity.
In such an environment, isolated incidents can rapidly become symbols within larger ideological struggles. Jihadist propagandists may portray Spain as part of a broader conflict between Islam and the West. Far-right groups may portray Muslim communities as incompatible with Spanish society. Neither narrative reflects the reality experienced by the overwhelming majority of citizens. Yet both narratives thrive because they simplify complex social realities into emotionally powerful stories. This process creates what criminologists refer to as cumulative or reciprocal extremism. Extremists cease to operate independently. Instead, they become mutually dependent actors within the same ecosystem of fear.
Education as the Missing Security Strategy
Perhaps the most overlooked dimension of the extremism debate is education. Counterterrorism strategies frequently focus on surveillance, intelligence gathering, policing, and law enforcement. While these measures remain necessary, they address symptoms rather than causes. The roots of radicalisation often emerge much earlier. They develop through identity formation, social exclusion, perceived injustice, and exposure to polarising narratives. Schools therefore represent one of society's most important defensive institutions.
Educational systems can either strengthen resilience against extremism or unintentionally contribute to polarisation through exclusion, discrimination, or the failure to promote critical thinking. Future security strategies should therefore move beyond purely military and policing approaches. They should focus equally upon civic education, media literacy, intercultural dialogue, and the development of democratic resilience.
A Strategic Challenge for the Future
The future challenge facing Spain is not merely preventing terrorist attacks. It is preventing the social fragmentation upon which extremism depends. Religious extremism does not emerge in isolation. It flourishes where fear, ignorance, mistrust, and identity insecurity are allowed to grow unchecked. The most effective response is therefore neither repression nor denial.
Subsequent investigations and security operations revealed the growing importance of local recruitment, online propaganda, and identity crises among segments of vulnerable youth. The emergence of the so-called Islamic State further accelerated concerns regarding radicalisation, foreign fighters, and digital extremism. Spanish authorities responded with sophisticated counterterrorism measures, intelligence cooperation, and preventive programmes aimed at disrupting recruitment networks before they could mature into operational threats. However, while Islamist extremism continues to warrant serious attention, it is no longer the sole challenge confronting Spanish society.
It is the construction of a society capable of resisting simplistic narratives, rejecting collective blame, and recognising the humanity of those who appear different. Spain's experience demonstrates that security is not achieved solely through stronger police forces or more sophisticated intelligence services. It is achieved through stronger communities, better education, and a shared commitment to democratic values.
In the twenty-first century, the battle against extremism will not be won only in intelligence centres, hideouts or courtrooms......It will also be won in classrooms.
