The International Day for the Abolition of Slavery is observed annually on 2 December to focus on the elimination of human trafficking, child labour and other forms of modern-day slavery.
Around 21 million women, men and children are still trapped in slavery worldwide, from the forced employment of children in conflict to sexual exploitation.
"It is vital that we give special consideration to ending modern-day slavery and servitude which affects the poorest, most socially excluded groups – including migrants, women, discriminated ethnic groups, minorities and indigenous peoples," UN secretary-general Ban Ki-moon said in a statement.
The date marks the adoption of the United Nations Convention for the Suppression of the Traffic in Persons and of the Exploitation of the Prostitution of Others by the General Assembly, on 2 December 1949. The day was first celebrated in 1986.
Now, the International Labour Organisation has teamed up with prominent artists, athletes and advocates in its new campaign to End Slavery Now.