Online Domestic Extremism in Canada Data Briefing (Dec 2025-Feb 2026)

This is a recurring data briefing produced by ISD Canada, funded by Public Safety Canada's Community Resilience Fund, tracking the online activity of Canadian domestic extremists between December 2025 and February 2026. It forms part of a longitudinal series monitoring extremist activity across major platforms since 2024.

The briefing examines which platforms Canadian extremist actors use, the narratives and grievances that mobilize them, and how they target specific communities. Consistent with prior editions in the series, it identifies Telegram as the leading platform for such activity, ahead of X, Facebook, YouTube and Instagram, a pattern the series attributes to the comparatively permissive moderation environment extremist networks encounter there relative to more heavily moderated mainstream platforms.

Detailed findings and underlying data sit in the full downloadable report rather than the public summary; the briefing's stated purpose is to give policymakers, platforms and researchers a regular, comparable snapshot of how domestic extremist activity evolves and migrates across the platform ecosystem.