The Demi and Ashton Foundation (DNA), founded by Demi Moore and Ashton Kutcher, launches its “Real Men Don’t Buy Girls” interactive video campaign this week, aiming to educate the public about child sex slavery in the United States.

Kutcher became interested in the issue after stumbling across a “Dateline” feature on sex trafficking in Cambodia. He was astounded by what he saw.

“I was watching six and seven-year-old girls being raped for profit,” Kutcher says. “I said to myself: I don’t want to live in a world where these things are happening and I’m not doing anything about them.”

Moore and Kutcher began researching the issue further, and discovered that, in the United States alone, between 100,000 and 300,000 girls are enslaved and sold for sex, while upwards of a million girls are prostituted worldwide. The entire industry generates $39 billion annually.

“The average age of a girl involved in the sex trade is 13.”