From the 1950s to the late 1990s, agents of the state spied on, interrogated, and harassed gays and lesbians in Canada, employing social ideologies and other practices to construct their target -- people who deviated from the so-called norm -- as threats to society and enemies of the state. Reconstructed from official security regime documents released through the Access to Information Act and interviews with gays, lesbians, civil servants, and high-ranking...