online extremism
Definition
Online extremism refers to the radicalization processes and ideological formations that emerge through digital environments, particularly among young people whose engagement with extremist content is shaped by social media affordances that encourage short attention spans and fragmentary political identification. The internet has become a primary vector of radicalization: US data show that internet-driven radicalization among under-30s rose 413% between 2010 and 2020, and radicalized young people with no formal group ties increased by 311% over the same decade. A defining feature of contemporary online extremism is ideological hybridity, where individuals draw on gore communities, mass shooter fandoms, nihilistic online spaces, and political extremist content simultaneously, producing worldviews that frontline practitioners cannot place within established categories such as Islamist or far-right. UK Prevent data illustrate this concretely: the category capturing mixed, unclear, or no ideology came to dominate referrals, with nearly 5,000 individuals referred under a 'no ideology' classification by March 2025, dwarfing referrals for classic extremist ideologies. These patterns reflect broader societal conditions, including the erosion of stable identities and the addictive architecture of social media platforms, which together produce individuals primarily drawn to violence itself before attaching a thin ideological rationale.
Sources: Baele (2026)
Related Terms
- terrorism (1 shared article)
- political violence (1 shared article)
- salad bar extremism (1 shared article)
- composite extremisms (1 shared article)
Applications
Online Extremism and Hybrid Extremism
Online extremism is a direct driver of ideological hybridity, as digital environments expose individuals to multiple, cross-pollinating sources of extremist content ranging from political ideologies to nihilistic violence communities. The manifestos of figures whose writings blend Islamophobic, anti-Semitic, anti-capitalist, and anti-tech ideations illustrate how online exposure produces worldviews qualitatively different from those of historical extremist ideologues. State surveillance that hinders organized extremism further pushes radicalization into decentralized online spaces, intensifying this hybridization.
Sources: Baele (2026)
Online Extremism and Radicalization
Online extremism is closely tied to radicalization pathways in which violence precedes ideology rather than following from it. Research on referred youth indicates that individuals are typically attracted first to extreme violence and only subsequently attach an ideological framing drawn from online communities. This pattern, visible in both UK Prevent referral data and Quebec radicalization unit observations, challenges the assumption that radicalization proceeds from coherent ideological commitment toward violent action.
Sources: Baele (2026)
