https://www.gdp.de/gdp/gdp.nsf/id/de_gleichgeschaltet–polizeigewerkschaft-im-nationalsozialismus
A german article! Very important!
Police Unions
After the seizure of power in late January 1933, the National Socialists immediately began, in the course of their "National Socialist revolution," to reorganize the police organization according to their ideas. A first step along this path was the destruction of the police unions.
The majority of the police organizations-and among them the Schrader Association in particular-had incurred the hatred of the National Socialists through their democratic attitude. By destroying their organizations, the Nazis deprived possible resistance efforts by republican-minded officials of their ground. At the same time, they used existing structures, such as the association newspapers, to spread their propaganda and to promote the synchronization of the police and their associations. For example, the declarations of admission to the newly created National Socialist "Kameradschaftsbund Deutscher Polizeibeamter e. V." were sent out as a supplement to the August issue of the Verbands-Zeitung, the Schrader association dissolved on July 29, 1933.
On July 17, Willi Luckner, who later became the federal leader of the Kameradschaftsbund, issued a decree that all police units had to be dissolved by August 31 in accordance with their statutes. Under strong pressure from the NSDAP, their members were transferred to the Kameradschaftsbund, officially formed on September 1, 1933. The Kameradschaftsbund set up its office at Lützowstrasse 73 in Berlin and was divided into individual regional associations, which in turn were subdivided into regional districts. The fact that the National Socialist police organization was by no means a representation of interests according to trade union standards is made clear by the statutes of the Kameradschaftsbund; Landesbund Preußen. Among other things, it stated
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