Vorbeugungshaft

Vorbeugungshaft (English "preventive arrest”) was an extrajudicial detention measure used in Nazi Germany by the Kriminalpolizei (Kripo, criminal police) against persons classified as "Asoziale" (asocial) and "Berufsverbrecher" (professional criminals), or otherwise dangerous to the Volksgemeinschaft (“people’s community”). In practice, it allowed the police to incarcerate people without ordinary judicial proceedings, often in Nazi concentration camps.^[1][2]

Under the influence of Nazi ideology, the Kripo developed and applied a racial-biological interpretation of crime. Criminals were portrayed as hereditarily and racially degenerate, while “asocial” individuals were said to threaten the racial health of German society. In this framework, the police claimed the right to remove such people from society preventively, not only for acts already committed but also for alleged future danger.^[3]

Vorbeugungshaft formed part of the wider Nazi dismantling of the rule of law. Like Schutzhaft (“protective custody”), it bypassed ordinary courts and gave the police broad authority independent of judicial review.^[4]

Police preventive detention had precursors at the state level after the Nazi seizure of power. According to current scholarship, it was first used in Prussia on the basis of a secret decree of the Prussian Interior Ministry dated 13 November 1933 for the application of police preventive detention against so-called “professional criminals”. Between 1933 and 1937, the practice developed unevenly across the German states.^[5]

A decisive step came with the Reich Interior Ministry’s basic decree on “Preventive Crime Control by the Police” of 14 December 1937. This decree established a uniform Reich-wide basis for police preventive detention and police planned surveillance, and expanded the measure to additional groups, including those designated “asocials”. It also strengthened the criminal police at the expense of the judiciary.^[6]

Vorbeugungshaft was presented by the regime as a form of crime prevention, but it was in fact an instrument of ideological and social persecution. Kripo officials argued that crime was a hereditary and social “disease” and that those deemed criminally predisposed had to be isolated to protect the national community.^[7]

This ideology blurred the distinction between criminal justice and police power. The police claimed authority not merely to punish proven crimes but to incapacitate persons judged undesirable on racial, hereditary, or social grounds.^[8][9]

Initially, preventive detention was directed mainly against persons categorized as “professional criminals” (Berufsverbrecher) and “habitual criminals” (Gewohnheitsverbrecher). It was later extended to a broader range of persons labeled “asocials”, including people stigmatized as vagabonds, beggars, prostitutes, pimps, alcoholics, the homeless, and the so-called arbeitsscheu (“work-shy”).^[10][11]

The measure was also applied to Sinti and Roma, whose persecution by the criminal police overlapped with racist policy and so-called crime prevention.^[12][13]

In practice, people could be detained not only for prior convictions but also for alleged future dangerousness or for conduct classified by the police as antisocial.^[14]

Those placed in Vorbeugungshaft were generally interned directly in concentration camps for a period determined by the police rather than by a court.^[15] In the concentration camp system, Kripo-issued preventive arrest orders applied to persons regarded as criminal, non-political, or socially deviant; in practice, detention was often extended indefinitely.^[16]

By the end of 1939, more than 12,000 prisoners held under preventive arrest were interned in concentration camps in Germany.^[17]

The decree framework of 1937 and implementing orders of 1938 also provided the basis for mass arrests in the so-called “work-shy Reich” action, in which persons categorized as “asocial” were arrested and deported to concentration camps such as Buchenwald and Sachsenhausen.^[18]

Vorbeugungshaft is often compared with Schutzhaft, another major form of extrajudicial detention in Nazi Germany. The principal difference lay in institutional responsibility: Schutzhaft was used chiefly by the Gestapo against political and racial enemies of the regime, whereas Vorbeugungshaft was employed by the Kripo against those categorized as criminal or socially deviant. In practice, however, both measures formed part of the Nazi system of preventive police terror outside judicial control.^[19][20]

Vorbeugungshaft illustrates how the Nazi state transformed criminal policing into an instrument of ideological repression. By redefining crime in racial and hereditary terms, the regime enabled the criminal police to detain thousands of people outside normal legal procedures and to integrate social persecution into the concentration camp system.^[21]

• Gellately, Robert. The Prerogatives of Confinement in Germany, 1933–1945. In: Norbert Finzsch and Robert Jütte (eds.), Institutions of Confinement. Cambridge University Press, 1996.
• Groh, Christian; Säuberlich, Anke (eds.). Deportations in the Nazi Era: Sources and Research. De Gruyter Oldenbourg, 2023.
• United States Holocaust Memorial Museum. Holocaust Encyclopedia, entries on preventive police action, the Kripo, and the concentration camp system.