You Believe Anything CNN Broadcast

CNN posted a misleading article on Facebook regarding the shooting by police in Scranton, PA of a man wielding a knife, as most of their stories and articles are.
I tried to post a picture of a man's back with severe knife wounds to show why police shoot a person that is threatening them with a knife.  Facebook would not allow it to be printed as they deemed it to be nudity and against their community standards. 
Pictures of the back of men in a Speedo bathing suit is fine, but a man's wounded back isn't.  Why?

My point was to show why police will shoot a man wielding a knife in a threatening manner or attempting to assault them with a knife.
This picture has been shown to police officers during training.