CHICAGO – It was February, the middle of lunch hour on a busy South Side street. The gunman approached his victim in a White Castle parking lot, shot him in the head, then fled down an alley.

The next month, one block away, also on West 79th Street: Two men in hooded sweatshirts opened fire at the Bishop Golden convenience store. They killed one young man and wounded five others, including a nephew of basketball superstar Dwyane Wade. The shooters got away in a silver SUV.

In July, a Saturday night, two men were walking on 79th when they were approached by a man who killed one and injured the other. This shooting resulted in a quick arrest; police had a witness, and a security camera caught the shooting.