The pink triangle is a symbol that originated in Nazi Germany, where it was used to identify and persecute homosexual men in concentration camps. The triangle was colored pink to denote their sexual orientation, and it became a mark of shame during that time. In the late 20th century, the pink triangle was reclaimed by the LGBTQ+ community as a symbol of pride and resistance against oppression. It now represents the fight for LGBTQ+ rights and serves as a reminder of the struggles faced by those who identify as LGBTQ+.