International Day Against Homophobia and Transphobia

The day will be commemorated in over 100 countries around the world and will highlight the horrific consequences of homophobia and transphobia on gender and sexual minorities.
17 May is a symbolic date for the fight against homophobia. On 17 May 1990, the World Health Organisation removed homosexuality from the list of mental illnesses, which put an end to over a century of medical homophobia.
The day aims to coordinate international events that raise awareness of LGBT rights violations and stimulate interest in LGBT rights work worldwide. The date of May 17 was chosen to commemorate the decision to remove homosexuality from the International Classification of Diseases of the World Health Organization (WHO) in 1990.
The original founders of the International Day Against Homophobia (or 'IDAHO'), established the IDAHO Committee to co-ordinate grass roots actions in different countries, to promote the day and to lobby for official recognition of May 17.