In this age of unchecked emphasis on national security, even liberal democracies seem prone to forgetting the histories of political policing and surveillance undergirding what we think of as our safety. Challenging this social amnesia, Aziz Choudry asks: What can we learn about the power of the state from the very people targeted by its security operations? Drawing on the knowledge of activists and academics from the United States, the United Kingdom, Canada, New Zealand, Australia, South Africa, and Chile, Activists and the Surveillance State delves into the harassment, infiltration, and disruption that has colored state responses to those deemed threats to national security. The book shows that, ultimately, movements can learn from their own repression, developing a critical and complex understanding of the nature of states and capital today that can crucially inform the struggles of tomorrow.