Is it obvious from the context that the person intends the picture to be fully in the public domain?
Did the newsworthy person post the picture himself/herself, or is the picture on someone else’s page?
Did the newsworthy person attach any conditions to the wider use of the picture?
Does the social networking site itself have well-known policies or tools to control how posted pictures become accessible to others?
the reasonable expectation of privacy of the newsworthy person?
the impact that the intended use of the picture may have on any person who, whether or not in the picture, may be suffering grief or other distress?
the impact that the intended use of the picture is likely to have on any person who may just happen to be in the picture with the newsworthy person? Can this issue be dealt with by cropping or pixelating the picture accordingly?