'I'm a rockstar not a parent': Rihanna defends controversial new video showing her murdering a rapist

By DAILY MAIL REPORTER Controversial: Rihanna's video for her new single Man Down has attracted criticism Rihanna has defended her controversial new music video Man Down, insisting 'this is the real world'.Taking to Twitter today the singer attacked her critics, claiming she was a 'rockstar not a parent' and saying she had 'the freedom to make art'. Man Down attracted the wrath of the Parents