Speaking out for those without a voice, Angie Harmon appears in a new Public Service Announcement on behalf of the victims of child trafficking.

The former "Law & Order" star is UNICEF's newest ambassador, set out to raise awareness of the inhumane and exploitative practice of child trafficking.

In the new TV spot, she details the pain the children endure, saying, "Their childhoods are being stolen. They work in exploitative, dangerous jobs, sell their bodies, miss out on education, and live in servitude."

The 40-year-old actress stated, "After learning the horrifying practice of child trafficking both in the United States and abroad, I knew I had to do something about it. That’s what drew me to UNICEF."

Later, she adds, "I believe that ZERO children should be forced into prostitution or made to work, especially at dangerous jobs. I look forward to working with UNICEF to help reach a day when every child has a safe and healthy childhood." Check out Angie's heartbreaking message below.