In Depth: New billboard campaign in Seattle unmasks child sex trade

This week, CNN's In Depth series, "The CNN Freedom Project," is highlighting the growing efforts to stop the trade and exploitation of human beings.

This morning, Linda Smith, founder and president of Shared Hope International and former US Representative, talks with Carol Costello about her organization's new billboard campaign, "Do You Know Lacy?."

Aimed at raising awareness of child sex trafficking by focusing on the plight of Lacy, one young girl who represents the thousands of children being prostituted in the US and around the world, the campaign will soon launch nationally.