In April 2011, Kutcher and then-wife Demi Moore began a public service announcement campaign to end child sex trafficking. Kutcher claimed that 100,000 to 300,000 American children were sold into sexual slavery. The number was criticized by newspaper "The Village Voice". Kutcher and others including the "New York Times", CSPAN, and CNN used a peer-reviewed study referring to minors at risk for sexual exploitation. "The Village Voice", from their research, said it was only hundreds of children. Kutcher claimed the criticism by the "Village Voice" promoted child prostitution and used Twitter to request that "Village Voice" advertisers withdraw their advertising from publications owned by its parent company.