The Tamil Nadu Prevention of Dangerous Activities of Bootleggers, Drug Offenders, Goondas, Immoral Traffic Offenders, Forest Offenders, Sand Offenders, Slum-Grabbers and Video Pirates Act, 1982, popularly known as the Goondas Act in Tamil Nadu, India and Gundar Sattam in Tamil, is a law for habitual offenders to be detained for a year as a preventive measure.