assault weapons fired on his birthday party. his cousin and another innocent bystander were killed. this youngster was shot in the neck and leg. >> he was one of the fortunate ones where he got shot twice but he is here through god's grace. you know, to tell the story. >> geraldo: in terms of violence since katrina, new orleans has run neck and neck with a similar are size city. detroit has long been notorious. in the 1950s and '60s, hoffa and his thugs ruled. already in decline in the 1970s, detroit became the nation's murder capital. by the 1980s, detroit was so bad hollywood decided only a robot cop could clean up the streets. >> detroit has a cancer. the cancer is crime. arrest.the woman go. >> today with murder back to its highest rate since the bad old days there is a new cop in charge. he is someone with a deeply personal reason for wanting to clean up the motor city.