Liam Neeson has helped highlight what he calls the largely “invisible” global scourge of violence against children.

The UNICEF video shows scenes that hint at a child’s suffering - a fallen bicycle in an alleyway, a broken glass in a kitchen.

The Irish actor says in the video: “This is a 15-year-old girl being gang raped... And here a toddler is being hit by his mother for breaking a glass.”

The Schindler’s List star, 61, is the goodwill ambassador for the United Nations’ children’s agency.

Unicef said its initiative “builds on growing popular outrage” over the fatal shooting of 26 children and teaching staff in Newtown, Connecticut, the 2012 shooting of 14-year-old Malala Yousafzai in Pakistan and gang rapes of girls in India and South Africa.