Marc Barkdale joined community organizers as they passed out flyers in the 1600-block of West Pratt. His son Javanis was shot in the chest.
Two other teenagers were also wounded but were not seriously hurt.
While some passed out flyers, others marched through the neighborhood.
Alderman Joe Moore told residents there would be a CAPS meeting Thursday night.
Barksdale's mother says her son has been released from the hospital.