It is 10 years since Argentina made LGBTQ+ history by allowing anyone to change their legal gender by self-declaration, tapping into a wider global debate about the progress of transgender rights.
Since then, other countries have also moved to allow self-ID without the need to get approval from doctors and courts, and more are looking at making the change.
They have faced criticism from some feminist campaigners and conservative groups who say trans freedoms are at odds with women’s safety – though supporters of such laws say a decade’s worth of data indicates those concerns are unfounded.
What can Argentina’s experience tell us about the impact of the change for trans and women’s rights, and what lessons does the act hold for other nations as they overhaul gender identity laws?