The conversation comes in the wake of a June 8 shootout in the parking lot of the church after a funeral service for shooting victim Ryan Devon Guider.
Two men, 19-year-old Carlos Henderson Jr. and 28-year-old Delmetrius Heard, shot each other to death during the melee.
The discussion takes place from 7 to 9 p.m.
It is free to attend and participants are asked to bring candles for the vigil.
Community organizations addressing youth violence can set up tables at the event.
The church is at 1170 N. Hairston Road in Stone Mountain. For more information, call 678-476-6000.