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Wikipedia: Unofficial Collaborator
The great range of circumstances that led to collaboration with the Stasi makes any overall moral evaluation of the spying activities extremely difficult. There were those that volunteered willingly and without moral scruples to pass detailed reports to the Stasi out of selfish motives, from self-regard, or from the urge to exercise power over others. Others collaborated with the Stasis out of a sincerely held sense of duty that the GDR was the better Germany and that it must be defended from the assaults of its enemies. Others were to a lesser or greater extent themselves victims of state persecution and had been broken or blackmailed into collaboration. Many informants believed that they could protect friends or relations by passing on only positive information about them, while others thought that provided they reported nothing suspicious or otherwise punishable, then no harm would be done by providing the Stasi with reports. These failed to accept that the Stasi could use apparently innocuous information to support their covert operations and interrogations.
A further problem in any moral evaluation is presented by the extent to which information from informal collaborators was also used for combating non-political criminality. Moral judgements on collaboration involving criminal police who belonged to the Stasi need to be considered on a case by case basis, according to individual circumstances.
A belief has gained traction that any informal collaborator (IM) who refused the Stasi further collaboration and extracted himself (in the now outdated Stasi jargon of the time "sich dekonspirierte") from a role as an IM need have no fear of serious consequences for his life, and could in this way safely cut himself off from communication with the Stasi. This is untrue. Furthermore, even people who declared unequivocally that they were not available for spying activities could nevertheless, over the years, find themselves exposed to high-pressure "recruitment" tactics. It was not uncommon for an IM trying to break out of a collaborative relationship with the Stasi to find his employment opportunities destroyed. The Stasi would often identify refusal to collaborate, using another jargon term, as "enemy-negative conduct" ("feindlich-negativen Haltung"), which frequently resulted in what they termed "Zersetzungsmaßnahmen", a term for which no very direct English translation is available, but for one form of which a definition has been provided that begins:
"a systematic degradation of reputation, image, and prestige in a database on one part true, verifiable and degrading, and on the other part false, plausible, irrefutable, and always degrading; a systematic organization of social and professional failures for demolishing the self-confidence of the individual.
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