International Day to End Violence Against Sex Workers is observed annually on December 17 by sex workers, advocates, friends, families and allies. Originally conceived as a memorial and vigil for the victims of the Green River Killer in Seattle Washington, United States (US), it has evolved into an annual international event. The day calls attention to violence and hate crimes committed against sex workers worldwide, as well as the need to remove the social stigma and discrimination that have contributed to violence against sex workers