THE SHOOTING OF TRAYVON MARTIN and the MEDIA'S USE OF PHOTOGRAPHY...("THOSE PEOPLE", THE EDITORS)
The dominant photo of Martin shows him 13 or 14 years old, wearing a red Hollister T-shirt. Other photos, none of them recent, depict a young Martin in a youth football uniform, holding a baby and posing with a snowboard. He is the picture of innocence.The iconic photos of Trayvon Martin & George Zimmerman & why you may not see the others [Poynter]
The most common photo of Zimmerman is a 2005 police mugshot. He is 22 in the photo, which was taken after he was arrested for assaulting an officer. (The charges were dropped.) He looks unhappy, if not angry.
The contrast — the two photos are often published side by side — has led to criticism that news media have tilted the story in favor of the 17-year-old victim and against the 28-year-old man who shot him.
Basically, it is all yellow journalism: http://en.wikipedia.org/wiki/Yellow_journalism