The History of Sex: Berlin -- 'We Knew Too Much' -- (Chapter IX, Part 10)

But the sniping from his own side must have been even more hurtful.

While young foreigners like Isherwood admired Hirschfeld as a 'heroic leader of his tribe,' many of the doctor's one-time allies had begun to view him as a liability.

From the safety of his own closet, the writer Thomas Mann dismissed 'Hirschfeld and his ghastly Committee,' and the leader of Germany's largest organization for gay groups—the so-called League for Human Rights—even started quoting Nazi propaganda against him:

'It is clear that The People's Observer newspaper'—a Nazi mouthpiece—'does not aim to damn homosexuals universally, but instead by and large is striking out only at Jews (especially Magnus Hirschfeld).'

Which made it okay, then.

AND SO IT BEGINS...

However, soon after Hitler took over as Chancellor in January 1933, his 'Campaign for a Clean Reich' shuttered gay clubs and newspapers.

In May, the Nazis stormed the Institute of Sexology, carting away and torching most of its collection and ceremoniously throwing a bust of Hirschfeld onto the bonfire.

Fortunately, the institute's founder was out of the country lecturing at the time: he had the surreal experience of seeing himself burnt in effigy on a newsreel in a Paris cinema (to this day, the stock footage of the infamous Nazi book burnings is usually from the ransacking of the institute). 

Who knew?
This Nazi was probably throwing sex books on the fire

Hirschfeld died two years later in exile.

The Nazis had branded his research center 'an unparalleled breeding ground of dirt and filth.'

However, one official at the institute had a much more intriguing theory: 'We knew too much.'

As the only place for counseling about sexual disorders, the center had treated people from many walks of life, including goose-stepping Nazis.

'Not 10% of the men who, in 1933, took the fate of Germany into their hands were sexually normal,' the assistant director said.

'Many of these personages were known to us directly… and of others we saw the tragic results: a young girl whose abdomen was covered with pin scratchings through the sadism of an eminent Nuremberg Nazi; I refer also to a thirteen-year-old boy who suffered from a serious lesion of the anal muscle brought about by a senior party official and to a youth from Berlin with severe rectal gonorrhea…'

'Our knowledge of such intimate secrets regarding members of the Nazi Party and other documentary material—we possessed about 40,000 confessions and biographical letters—was the cause of the complete and utter destruction of the Institute of Sexology.'