In Tennessee, campaigners are calling for the release of 25-year-old Cyntoia Brown, who was sold into sexual slavery as a child and sentenced to life in prison after she killed a man who purchased her for sex. Brown was just 16 years old in 2004, when she was forced into prostitution by a pimp nicknamed “Kutthroat,” who beat and raped her on a regular basis. In 2004, Brown was tried as an adult and convicted on murder charges, after she killed 43-year-old Johnny Allen, who took her to his home for sex. Brown says Allen was behaving erratically and owned a number of guns, and that she feared for her life when she shot him in the head and made her escape. The case has drawn widespread attention on social media under the hashtag #FreeCyntoiaBrown. Pop superstar Rihanna wrote, “Something is horribly wrong when the system enables these rapists and the victim is thrown away for life!”