Magnus Hirschfeld was a Jewish German physician and sexologist, whose citizenship was later revoked by the Nazi government. Hirschfeld was educated in philosophy, philology and medicine. An outspoken advocate for sexual minorities, Hirschfeld founded the Scientific-Humanitarian Committee and World League for Sexual Reform. He based his practice in Berlin-Charlottenburg during the Weimar period. Performance Studies and Rhetoric Professor Dustin Goltz characterized the committee as having carried out "the first advocacy for homosexual and transgender rights".

The Scientific-Humanitarian Committee was founded by Magnus Hirschfeld in Berlin in May 1897, to campaign for social recognition of lesbian, gay, bisexual and transgender people, and against their legal persecution. It was the first LGBT rights organization in history. The motto of the organization was "Per scientiam ad justitiam", and the committee included representatives from various professions. The committee's membership peaked at about 700 people. In 1929, Kurt Hiller took over as chairman of the group from Hirschfeld. At its peak, the WhK had branches in approximately 25 cities in Germany, Austria and the Netherlands.