Pink triangle and the LGBT rights movement. In Nazi concentration camps, each prisoner was required to wear a downward-pointing, equilateral triangular cloth badge on their chest, the color of which identified the reason for their imprisonment. Early on, homosexual male prisoners were variously identified with a green triangle (indicating criminals) or red triangle (political prisoners), the number "175" (referring to Paragraph 175, the section of the German penal code criminalizing homosexual activity), or the letter "A" (which stood for "Arschficker", literally "ass fucker"). Later, the use of a pink triangle was established for prisoners identified as homosexual men, which also included bisexual
Pink triangle incorporated into Chicago's Legacy Walk. It is the basis of the design of the Homomonument in Amsterdam and the Gay and Lesbian Holocaust Memorial in Sydney. In San Francisco it inspired both the Pink Triangle Park in the Castro and the Pink Triangle on Twin Peaks that is displayed every year during Pride weekend. It is also the basis for LGBT memorials in Barcelona, Sitges, and Montevideo, and the burial component of the LGBT Pink Dolphin Monument in Galveston. Until 1985 there was an unofficial ban on placing pink triangle wreaths at the United Kingdom war memorial the Cenotaph, and