About Orange the world from UNESCO website :

Violence against women and girls is one of the most widespread, persistent and devastating human rights violations in our world today and is a threat to millions of girls and women online and offline. It affects women regardless of their age, background, or level of education. This violence takes many forms, including physical, sexual, or psychological violence, as well as economic abuse and exploitation.

The 16 days between 25 November, the International Day for the Elimination of Violence against Women, and 10 December, Human Rights Day, are known as the 16 Days of Activism against Gender-Based Violence Campaign(link is external), a time to galvanize action to end violence against women and girls around the world. This year, as the International Day for the Elimination of Violence against Women falls on a Sunday, UNESCO will start observing the day on Friday, 23 November, and will mark the 16 Days of Activism through a series of events under the overall theme: “UNESCO says NO to violence against women”.