A tale of two images
What would you feel if I told you I was going to show you an image of a naked, crying, terrified, 9-year-old girl, who'd just had something horrible done to her? What would you feel if I told you I was going to show you an image of a naked, healthy, 9-year-old boy, who appears to be masturbating? The first image I can show you. It's at Wikipedia, it won a Pulitzer Prize, it was the World Press Photo of the Year in 1972. The second image I can't show you. I don't have the image, haven't seen the image, and merely possessing or distributing such an image could land you in a Federal penitentiary for five years since it meets the Federal definition of child pornography.
source: Article 'A Tale of Two Images'; cpexplosion.wordpress.com/2010/03/24/a-tale-of-two-images; CP Explosion; 24 March 2010