Black Triangle

The black triangle was used to mark "asocial" and "workshy" individuals, including lesbians, Romani and others in the camps. It has been adapted as a lesbian symbol.

From: https://en.wikipedia.org/wiki/LGBT_symbols

Triangles used for persecution during the Nazi regime[edit]

Main articles: Pink triangle and Persecution of homosexuals in Nazi Germany and the Holocaust

One of the oldest of these symbols is the pink triangle, which originated from the Nazi concentration camp badges that male homosexuals were required to wear on their clothing.^[1] Many of the estimated 5–15,000 gay men and lesbian women imprisoned in concentration camps died during the Holocaust.^[2] For this reason, the pink triangle is used as an identification symbol and as a memento to remind both its wearers and the general public of the atrocities that gays suffered under Nazi persecutors.^{[citation needed]} AIDS Coalition to Unleash Power (ACT-UP) adopted the inverted pink triangle to symbolize the "active fight back" against HIV/AIDS "rather than a passive resignation to fate."^{[this quote needs a citation]}

The pink triangle was used exclusively with male prisoners—lesbians were not included under Paragraph 175, a statute which made homosexual acts between males a crime. The United States Holocaust Memorial Museum stipulates that this is because women were seen as subordinate to men, and that the Nazi state feared lesbians less than gay men. However, the USHMM also claims that many women were arrested and imprisoned for "asocial" behaviour, a label which was applied to women who did not conform to the ideal Nazi image of a woman: cooking, cleaning, kitchen work, child raising, and passivity. These women were labeled with a black triangle.^[3] Lesbians reclaimed this symbol for themselves as gay men reclaimed the pink triangle.^{[citation needed]}