article_snippet: Police tried to break up crowds that had formed after the shooting at Madison Market as ambulance crews tried to transport the wounded .
article_snippet: At one point, the police union was so upset over layoffs and a record homicide rate that the police union posted billboards tracking the largest U.S. city's body count and disclosing the city manager's phone number.
article_snippet: Stop laying off cops!'
article_snippet: the largest U.S. city has tried to reduce violence.
article_snippet: A program called Operation Peacekeeper uses street-wise people trained in conflict resolution, mediation, community organizing and mentoring to work in schools, parks, street corners and apartment complexes.
article_snippet: Workers respond to areas where violent crimes have occurred in an attempt to talk with young people and prevent retaliations.