FERGUSON, Mo. — Elected leaders in the St. Louis suburb where an unarmed black 18-year-old was fatally shot by a white police officer hoped to use their first public meeting since Michael Brown’s death as a chance to promote community healing.

Instead, they were greeted Tuesday night with anger, outrage and warnings of voter retribution at the ballot box. Proposals to overhaul the municipal courts and create a citizen police review board were greeted warily, if not with outright skepticism.

“You’ve lost your authority to govern this community,” said St. Louis activist John Chasnoff. “You’re going to have to step aside peacefully if this community is going to heal.”

The shooting last month exposed an undercurrent of racial unrest in Ferguson and other nearby suburbs in mostly black communities of north St. Louis County, and prompted days of sometimes-violent protests.

Ferguson officials have pledged to boost minority hiring in a 53-person police force with just three black officers, and to meet informally in city neighborhoods to promote a public dialogue.