By the Institute for Strategic Dialogue

Key Findings • While occupying parallel digital spaces and producing similar types of harm, online subcultures of nihilistic violence are distinct from ideologically motivated extremism. This unique threat requires bespoke platform interventions rather than expansions and adaptations of existing terrorism‑ and violent extremism‑focused frameworks. • Nihilistic violence ecosystems are decentralised, cross‑platform and highly agile, leveraging mainstream and fringe platforms for grooming, propaganda and operational coordination. Platform strategies should not look to respond to the threat as new forms of dangerous organisations, but rather to understand this phenomenon as a more dynamic threat from nihilistic violent subcultures, of which ‘groups’ like 764 and the True Crime Community are just the latest manifestation. • Nihilistic violent communities produce a much broader range of harms than ideologically motivated extremist networks, spanning sexual exploitation, cybercrime and various forms of real‑world targeted violence, including self‑harm, animal abuse, interpersonal violence and mass casualty attacks such as school shootings. • New platform policies are not necessarily required to mitigate the threat, given that many of these harms are already covered in platform community guidelines. However, these should be knitted together as part of a cohesive platform strategy, as enforcement against ecosystems of nihilistic violence is currently fragmented and reactive, enabling ban evasion and rapid regrouping.