Pink Triangle
The downward pointing pink triangle as a symbol for gays was first used by the Nazi’s in concentration camps to denote the homosexual or bisexual men and transgender women.
In the 1970s during the gay liberation movement, the symbol was used the image to promote awareness of its use under the Nazis. It was used as a memorial for victims and to protest for gay rights.
Then in the 1980s the pink triangle began to be reclaimed and used as a positive symbol of gay and lesbian identity.