A comprehensive 35-page research publication by the U.S. Department of Justice and its research arm, the National Institute of Justice, offers timely lessons on how the internet and social media influence domestic radicalisation. Though rooted in the American context, its findings resonate strongly with Sri Lanka’s own security, social, and communal realities. The central conclusion is both reassuring and alarming: the internet alone does not radicalise people, but it can rapidly intensify grievances, harden identities, and normalise extreme views when underlying social fractures already exist.
Contrary to popular belief, the NIJ study shows that most individuals do not become radicalised simply by watching an online video or reading extremist posts. Radicalisation is a process that often begins with personal or collective grievances such as unemployment, discrimination, humiliation, identity crises, or unresolved trauma. In Sri Lanka, these conditions are familiar. Economic stress, post-conflict memories, post-Easter mistrust, and social polarisation create fertile ground. The internet then acts as an accelerator, validating anger and providing narratives that justify resentment. Radicalisation does not begin online, but it often ends there.
One of the study’s most important findings is that people are often drawn to extremist online spaces not for violence or ideology, but for belonging and recognition. Identity comes first, and ideology follows. This mirrors Sri Lanka’s experience, where many young people across all communities turn to online groups to feel heard and respected. When mainstream institutions fail to engage them meaningfully, digital spaces fill the void, sometimes with dangerous narratives. Unlike large countries, Sri Lanka’s radicalisation pathways are often local and communal, shaped by village memory, religious identity, and rumour rather than distant ideological debates.
The NIJ report explains how social media algorithms reward outrage, trapping users inside echo chambers where extreme ideas appear normal and justified. Repetition hardens belief. In Sri Lanka, this effect is intensified by language silos, as Sinhala, Tamil, English, and Arabic online spaces rarely intersect. Each can develop its own version of reality, especially during crises. False narratives often spread faster than official clarification, deepening suspicion between communities. Silence or delayed responses from authorities only worsen this dynamic.
Another key finding is the widespread use of coded language, memes, and symbolic references. Extremist discourse often avoids open calls for violence, making early detection difficult. In Sri Lanka, such codes are frequently local, tied to past incidents, places, or communal slang. Without cultural and linguistic understanding, warning signs can be missed until escalation occurs. This highlights a critical gap, as technology alone cannot replace contextual intelligence.
Perhaps the most important reassurance in the NIJ study is that most people exposed to extremist content never become violent. Violence emerges only when belief turns into mobilisation and behavioural escalation. For Sri Lanka, this distinction is vital. Over-securitisation, where online speech is treated as proof of violent intent, risks alienating entire communities and reinforcing fear and mistrust. History shows that collective suspicion often fuels, rather than prevents, extremism. Effective security depends on identifying behavioural warning signs, not policing identities or opinions.
The study highlights youth as particularly vulnerable due to high screen time and low digital literacy. Sri Lanka’s rapid smartphone penetration has not been matched by education on misinformation, algorithms, or online manipulation. Digital literacy is no longer a soft skill; it is a national security requirement.
The NIJ report also makes clear that government messaging alone rarely works. Trusted community voices, including religious leaders, educators, and civil society figures, are far more effective, especially in the immediate aftermath of violent or polarising incidents. Sri Lanka’s experience confirms this pattern. Where calm, credible leadership emerged after crises, tensions eased. Where communication was delayed, contradictory, or politicised, rumours filled the vacuum. The first seventy-two hours after a major incident are decisive.
Drawing from the study’s findings, several priorities stand out for Sri Lanka. Prevention must take precedence over reaction, with greater investment in youth engagement and digital resilience. Security efforts should focus on behaviour rather than belief, clearly distinguishing expression from mobilisation. Multilingual analysis must be strengthened, recognising that language and culture matter deeply in identifying risk. Community policing should be trust-based, rather than driven by profiling or fear. Finally, Sri Lanka needs a clear post-crisis communication approach that is fast, factual, and unified.
Ultimately, the NIJ study delivers a simple but profound warning: radicalisation thrives where trust collapses, whether trust in institutions, in neighbours, or in the future. Sri Lanka’s challenge is not a lack of laws or intelligence tools, but the need for fairness, foresight, and confidence-building in a digital age. The internet did not create extremism, but how Sri Lanka responds online will determine whether division deepens or society holds together.
