 During the leadership of General Secretary Leonid Brezhnev, psychiatry was used to disable and remove from society political opponents ("dissidents") who openly expressed beliefs that contradicted the official dogma. The term "philosophical intoxication", for instance, was widely applied to the mental disorders diagnosed when people disagreed with the country's Communist leaders and, by referring to the writings of the Founding Fathers of Marxism – Leninism — Karl Marx, Friedrich Engels, and Vladimir Lenin — made them the target of criticism.
