Celebrities including Jessica Biel, Edward Norton, Justin Timberlake, and Jason Mraz are participating in Real Men Don’t Buy Girls, a video campaign on YouTube led by the DNA Foundation, which, in turn, is led by Ashton Kutcher and Demi Moore.

Real Men Don’t Buy Girls is aimed at the global sex-slavery market, which generated some $32 billion in annual profit on the backs of women as young as 13.