You Don't Know Me Jax Jones feat. Raye Download 'You Don't Know Me' on iTunes
'Man Down' is the fifth US single taken from Rihanna's 2010 album, 'Loud'.
There's no UK single release date yet, but Rihanna has revealed the new video for the song which was shot in Jamaica earlier this year.
Parent groups in the US have criticised Rihanna for portraying "cold, calculated execution of murder" in the video, which opens with her shooting a man, the video then goes on to show the events leading up to the murder.
Take a look at the video for 'Man Down' and let us know what you think below...