Facebook claims that images such as this one: http://on.fb.me/Pu1bDS are 'okay' as per their policy on graphic violence. Facebook states:
People use Facebook to share events through photos and videos. We understand that graphic imagery is a regular component of current events, but must balance the needs of a diverse community. Sharing any graphic content for sadistic pleasure is prohibited.
The caption on the picture obviously asks for likes and shares. All this kind of content does is stir up emotions and spark controversy and anger.
KEEP IT OFF THE SITE!