Hoping to bring an end to child sex trafficking in the US, newly-turned momand pop sensation Pink has joined a campaign to raise money for the makers of a documentaryfilm on the related issue. Filmmaker Libby Spears, who is making the documentary, Playground:The Child Sex Trade in America, was in need of financiers to complete the project, Daily Expressreported. According to reports, Pink is one of the 11 people who had donated generously for theproject. The So What singer is also planning to get the distribution rights of the documentaryto spread awareness and bring an end to sex slavery and human trafficking in the country. Thesinger became a proud mother of a baby daughter last year.