Karl Bonhoeffer

[1] One of his daughters was Christine von Dohnanyi and one more son was chemist Karl-Friedrich Bonhoeffer.

Bonhoeffer died in Berlin at the age of 80 after the end of World War II.

[2] Along with Emil Kraepelin, Bonhoeffer was a major opponent of sexual reform movement that advocated for gay rights in the Weimar Republic.

These policies extended beyond the bounds of homosexual intercourse, instead applying to any act that involved sexual gratification.

These arguments were later taken up by the Nazi party, providing the grounds to treat homosexuality as an epidemic deserving of severe punishment, in doing so providing the Nazis with the rhetoric needed to persecute gay men under the guise of conforming to scientific knowledge.