They show people what they want to show them when they want to. The are able to manipulate the shots and when each photograph is accompanied by text, it takes on an entirely new meaning. Violence is a key image and is often used by the media. Photographers try to capture every image possible to show the violence that is taking place. Events that are not violent are made to look violent by photographs.
People are therefore, given false images to what is going on.
However, violence is what the public craves and the media does all it can to help satisfy this desire. Photographers also manipulate which images to send where. During World War 11, images were sent to the United States that portrayed the American perspective of the war. The American public would never see images that depicted the horrors that their own men did. The war is then manipulated to the liking of the American public.