At least 600 potential protesters in the St. Louis area have received training in the past week from a group of organizers who say they're stressing non-violence.
A grand jury is considering whether Ferguson officer Darren Wilson should be charged in the Aug. 9 fatal shooting of Michael Brown.
The St. Louis Post-Dispatch reports two community organizations, the Don't Shoot Coalition and the Missourians Organizing for Reform and Empowerment, have held meetings on how to protest peacefully following the grand jury's announcement.
Included in their plan is to gather in Clayton the next business day after the announcement.
Organizers say they expect four "hot spots" for protesters, including the Ferguson police station.