Some businesses in Ferguson have boarded up their windows in anticipation of the grand jury announcement whether to criminally charge Officer Darren Wilson in the killing of 18-year-old Michael Brown. Jeff Roberson/AP hide caption

itoggle caption Jeff Roberson/AP

Dontey Carter (from left), Mel Moffitt, Lenard Smith, Ned Alexander and Allen Frazier are all members of the Lost Voices group, formed after Michael Brown's death in August. They say they want to ensure justice for Michael Brown and other unarmed individuals killed by police officers. Cheryl Corley/NPR hide caption

itoggle caption Cheryl Corley/NPR

Faux tombstones line a lawn in Medinah, Ill. It's a campaign to heighten awareness about an epidemic of heroin and pain pill overdoses — a prelude to International Overdose Awareness Day on Aug. 31. Cheryl Corley/NPR hide caption

itoggle caption Cheryl Corley/NPR