Gay pride or LGBT pride refers to a world wide movement and philosophy asserting that lesbian, gay, bisexual, and transgender individuals should be proud of their sexual orientation and gender identity. Gay pride advocates work for equal "rights and benefits" for LGBT people. The movement has three main premises: that people should be proud of their sexual orientation and gender identity, that sexual diversity is a gift, and that sexual orientation and gender identity are inherent and cannot be intentionally altered. Marches celebrating Pride (pride parades) are celebrated worldwide. Symbols of LGBT pride include the rainbow flag, the Greek lambda symbol, and the pink as well as black triangles reclaimed from their past use.