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
Burnside Triangle neighborhood." Burnside Triangle The Burnside Triangle, also known as Pink Triangle or Vaseline Alley, was a triangular district in Portland, Oregon, United States, known for its relatively higher density of LGBT and gay-friendly businesses. The Burnside Triangle was centered on Southwest Stark Street and comprises a triangular set of city blocks that anchors the north end and acts as a welcoming space to the district drawing visitors throughout the region to many different meeting spots, including bars and nightclubs. The gay liberation, lesbian feminism, and the sexual revolution of the 1960s and 1970s helped bring attention to the problems faced