For months, officials in Sanford and South Florida have been working with pastors, youth coaches, community activists and summer camp counselors to stress a non-violent approach if Zimmerman walks free. At the same time, police say they have quietly been making plans for dealing with any potential emotional flare-ups that could quickly turn into storefront-smashing, car-burning riots.
"It's all right to be vocal, but we don't want to be violent," said the Rev. Walter T. Richardson, a longtime pastor and chairman of Miami-Dade County's Community Relations Board, which has been holding town hall-style meetings about the case. "We've already lost one soul and we don't want to lose any more."
Martin, from the suburb of Miami Gardens, was 17 when he died. He was in Sanford visiting his father and father's fiancee when Zimmerman, a neighborhood watch volunteer, fatally shot him during a physical confrontation in a gated community in February 2012.
Martin's supporters portrayed the shooting as racially motivated, while Zimmerman, who identifies himself as Hispanic, claimed self-defense. Charged with second-degree murder, Zimmerman is pleading not guilty at the trial unfolding in a Sanford courthouse.
After police initially refused to arrest Zimmerman, there were many large but peaceful protests in both Sanford and the Miami area - as well as in New York and other cities.