In spring 1937, a prisoner arrived at Sachsenhausen camp near Berlin. His uniform had a pink triangle pointing downward. He was not Jewish. He was not a political prisoner. He had been arrested under Paragraph 175. This German law made sexual acts between men illegal. Thousands wore that triangle. Most did not survive.

Paragraph 175 and the Nazi State

Paragraph 175 was not new. The law existed since 1871 when Germany was founded. It made "unnatural fornication" between men a crime. Enforcement changed over time. During the Weimar Republic, from 1919 to 1933, the law was rarely enforced strictly. Berlin became quite open. Gay bars, cabarets, and organisations grew. Magnus Hirschfeld's Institut für Sexualwissenschaft, founded in 1919, did research and offered counselling. The institute also pushed to repeal Paragraph 175.

Then came 1933. The Nazis took power on January 30. Within months, the institute was raided. On May 6, 1933, students and SA troops broke in. They threw tens of thousands of books into the street. Days later, those books burned at Opernplatz. It was one of the most visible book burnings of that era.

In 1935, the Nazis revised Paragraph 175. The new version was much broader. More acts now qualified as criminal. Arrests rose sharply. Between 1933 and 1945, roughly 50,000 men were convicted. Historian Rüdiger Lautmann published this research in 1977. Between 5,000 and 15,000 ended up in camps. Estimates vary. Many records were destroyed or never kept.

The Triangle System Inside the Camps

The Nazi camp system used coloured triangles to classify prisoners. The triangles were sewn onto uniforms, always pointing downward. Political prisoners wore red. Jehovah's Witnesses wore purple. Jews wore two overlapping triangles forming the Star of David. Men convicted under Paragraph 175 wore a pink triangle.

The badge was more than administrative. It marked men for particular treatment. Former prisoners and historians documented that pink triangle men got brutal labour. They were placed in the worst barracks. Guards used violence frequently. Fellow prisoners sometimes avoided them.

Eugen Kogon, a political prisoner at Buchenwald, described this in his 1946 book Der SS-Staat. He noted that pink triangle men occupied the lowest position. Kogon was not writing as an advocate. He was writing as a witness.

Not all pink triangle men were there for the same reason. Some were convicted under Paragraph 175. Others were arrested during raids without formal conviction. Some historians, including Geoffrey Giles, noted inconsistent application. Surviving documentation is incomplete.

Women with relationships with other women were not usually targeted under Paragraph 175. The law applied only to men. Lesbian women were sometimes imprisoned as "asocial," marked with black triangles. Their experience was different and largely separate.

Silence After Liberation

When camps were liberated in 1945, survivors faced difficult reality. Men convicted under Paragraph 175 were not recognised as victims equally. In West Germany, Paragraph 175 itself remained after the war. The Nazi revised version stayed until 1969. Survivors could theoretically be arrested again.

There was no official remembrance. No reparations. Many survivors stayed silent for decades. The pink triangle disappeared from public memory almost entirely. Nazi persecution history focused on Jewish victims and political prisoners. The pink triangle men were largely absent from that story.

This silence lasted roughly thirty years. It began to crack in the 1970s.

Reclaiming the Symbol

In 1972, German gay rights activists began referencing the pink triangle in political writing. Historian Rüdiger Lautmann published statistical research on gay men in camps in 1977. His work gave the history documented evidence foundations.

Then came the AIDS crisis. In the early 1980s, a new epidemic killed gay men in large numbers. In New York, San Francisco, and cities worldwide, communities organised responses. Governments moved slowly. Activists needed visual language. They needed symbols with weight.

In 1987, ACT UP was founded in New York. The AIDS Coalition to Unleash Power created iconic imagery. They used the pink triangle, now pointing upward instead of downward. The slogan read: Silence = Death. The inversion was deliberate. The downward triangle had marked victims. The upward triangle reclaimed that history. It turned humiliation into resistance.

The image spread rapidly. It appeared on posters, buttons, and protests in the United States and Europe. Many people first learned about Nazi persecution of gay men through this symbol.

Memory, Monuments, and Ongoing Research

Official recognition came slowly through proper channels. In 1985, West German President Richard von Weizsäcker gave a landmark speech. He acknowledged various groups persecuted by Nazis. He mentioned men persecuted for homosexuality. It was an early government acknowledgement.

Memorials followed. In 1995, a plaque was unveiled at Nollendorfplatz subway station in Berlin. That district had been a gay life centre during Weimar. It bore a pink triangle. In 2008, a more prominent memorial opened nearby in Tiergarten. A concrete block with a small window showed looping film. It honoured homosexual victims of National Socialism.

In the Netherlands, the Homomonument in Amsterdam was unveiled in 1987. Artist Karin Daan designed it. Three pink granite triangles form a larger triangle. One points to the past — persecution. One points to now — remembrance. One points to the future. It remains one of the most visited LGBTQ+ memorials worldwide.

Research has continued to deepen this history. Scholars including Stefan Micheler and Andreas Pretzel examined local police records. They reconstructed individual cases. Their work shows how varied experiences were. Some men were denounced by neighbours. Some were caught in police entrapment. Some were turned in by former partners.

The total victim numbers remain uncertain. The figure of 100,000 arrests, sometimes cited, is disputed. Lautmann's more conservative estimates, based on surviving records, suggest lower numbers. He acknowledged records are incomplete. What is not disputed is systematic persecution, imprisonment, and killing for violating Paragraph 175.

What the Triangle Carries

The pink triangle carries two histories at once. The first is persecution — arrests, camps, post-war silence, unacknowledged men. The second is reclamation — activists who found meaning in that symbol. They turned it toward a different purpose.

Both histories are real. Neither erases the other.

The historian's task is keeping them separate and clear. Nazi use of the pink triangle meant humiliation and control. Later use by ACT UP meant historical memory and political urgency. Mixing the two flattens both.

What connects them is insisting this history should not be forgotten. For decades after 1945, it nearly was. Men who wore the pink triangle left few testimonies. Many died. Many survivors chose silence — sometimes from shame, sometimes from fear, sometimes because no one asked.

Their history is now part of the broader Second World War record. It took a long time to get there.