The institute’s founding purpose was to create “scientific research on the entirety of sexual life” and educate German society on its findings.[6] It pioneered research and treatment for various matters regarding gender and sexuality, including gay, transgender, and intersex topics. In addition, it offered various other services to the general public: this included treatment for alcoholism, gynecological examinations, marital and sex counseling, treatment for venereal diseases, and access to contraceptive treatment. It offered education on many of these matters to both health professionals and laypersons.[7][8]

After the Nazis gained control of Germany in the 1930s, the institute and its libraries were destroyed as part of a Nazi government censorship program by youth brigades, who burned its books and documents in the street.[9][10][11]

https://en.wikipedia.org/wiki/Institut_für_Sexualwissenschaft

large numbers of former Nazi Party members and wartime police personnel were reinstated in the police service.[12]

Since at least the 2010s, police forces in Germany — including those serving the city of Berlin — have been subject to investigations and disciplinary proceedings over alleged far-right extremist views or membership among officers. A 2024 report noted that more than 400 investigations were underway in German state police forces for possible right-wing extremist beliefs or conspiracy ideology.[17] In Berlin specifically, internal records showed investigations of dozens of officers: by 2020, the Berlin police reported about 33 officers under investigation since 2017 for extremist activity (including Nazi salutes) and four dismissal proceedings.[18] In late 2020, the Berlin police chief stated that almost 40 disciplinary proceedings were underway relating to suspected right-wing extremism within the force, and acknowledged the possible dismissal of about twenty officers.[19]

https://en.wikipedia.org/wiki/Berlin_Police#Controversies