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
Polonia Triangle depth report titled ""Wicker Park's Dirty Doorstep: Round two of the battle over the glorified bus stop known as the Polish Triangle"". Additionally, the Metropolitan Planning Council along with the Placemaking Movement and WPB (Wicker Park/ Bucktown) have jointly undertaken an initiative to redevelop and renovate Polonia Triangle. Polonia Triangle Polonia Triangle (), also known as the Polish Triangle, is located in West Town, in what had been the historical Polish Downtown area of Chicago. A single-tiered fountain made of black iron with a bowl about nine feet in diameter is installed at its center. Polonia Triangle derives its name