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The rainbow flag is a symbol of lesbian, gay, bisexual, transgender, and queer (LGBTQ) pride and LGBTQ social movements. The colors reflect the diversity of the LGBTQ community, as the flag is often used as a symbol of gay pride during LGBTQ rights marches. While this use of the rainbow flag originated in San Francisco, California, USA, it is now used worldwide. Originally devised by artist Gilbert Baker, the design has undergone several revisions since its debut in 1978. (Wikipedia)