The International Day Against Homophobia, Biphobia, Interphobia and Transphobia (IDAHOBIT) was established in 2004 to raise awareness of the the violence and discrimination faced by lesbian, gay, bisexual, trans, intersex, and people and with diverse sexual orientations, gender identities or expressions, and sex characteristics.
Notably, in Canada, this day was marked as early as 2003 at the invitation of Fondation Émergence, one year before it became a global initiative.
The date, May 17, was chosen to commemorate a landmark decision by the World Health Organization. On this day in 1990, homosexuality was officially removed from the International Classification of Diseases. Since then, homosexuality is no longer considered a mental illness.
Today, IDAHOBIT is observed in over 130 countries– including 37 where same-sex acts remain criminalised– making it a powerful global movement for visibility, advocacy, and solidarity.