The Safe Space Ally placard was designed to honor two important symbols within the LGBT community. The background of the placard contains the six colors of the rainbow. In 1978, Gilbert Baker of San Francisco designed and made a flag with six stripes representing the six colors of the rainbow as a symbol of gay and lesbian community pride. While this flag began in San Francisco, today it can be seen all over the world as a sign of pride and community.
The text on the placard is presented in the shape of an upside down triangle in honor of the "pink triangle." An upside down pink triangle was originally used as a Nazi concentration camp symbol to label homosexual men. By the end of the 1970s, the pink triangle was adopted as a symbol of pride.