Researchers and journalists have begun to reveal the extent to which Indigenous activists and organisations in Canada are subject to surveillance by police, military, national security intelligence agencies and other government bodies. While security agencies have long looked beyond ‘traditional’ national security threats and set their sights on activists – even in the absence of evidence linking these individuals or organisations to any violent criminal activity – this reality is increasingly the subject of media and public scrutiny. As Jeffrey Monaghan and Kevin Walby have written, the language of “aboriginal and multi-issue extremists” in security discourse blurs the line between threats to national security, matters of ordinary law enforcement, and lawful, democratic advocacy. In this piece, we summarise some of what is known about the surveillance practices employed to keep tabs on Indigenous leaders and activists, and describe their impact on Charter-protecte