While the mainstream media lavished endless attention and emotion on the George Zimmerman trial for the killing of Trayvon Martin last weekend, the body of a 17-year-old black boy was discovered on basement stairs, face down, behind a boarded-up house in the Englewood neighborhood of Chicago. His body was so badly decomposed that local news reports originally suggested that he had died of blunt force trauma. An autopsy demonstrated that he had in fact been shot to death. His family blamed his death on his refusal to join a gang at school. The boy's name was Darryl Green. Thus far,...