(USA Today) -- George Zimmerman is a free man.
After being found not guilty Saturday night in the shooting death of Trayvon Martin, the judge told Zimmerman that he would be released and his ankle monitor removed once he left the courthouse in Sanford, Fla.
Zimmerman could also be a marked man.
Robert Zimmerman Jr., Zimmerman's brother, spoke to CNN after the verdict and expressed concern for his brother's safety.
"He will be looking around his shoulder the rest of his life," he said.
Zimmerman attorney Mark O'Mara said that people who think Zimmerman killed Trayvon for racial reasons could react violently.
"He has to be cautious and protective of his safety," O'Mara said after the verdict.
Demonstrators outside the courthouse exclaimed disbelief, one by one, as they learned Zimmerman was found not guilty.
"The system has failed!" irate demonstrators chanted.
Zimmerman showed no emotion as the verdict was read. Afterward, he smiled slightly and shook hands with one of his lawyers.
Zimmerman may have to go into hiding and be unable to live a normal life for some time, said Jose Baez, the defense attorney who successfully defended Casey Anthony, a Florida mother accused of killing her daughter in a high-profile capital murder case.
"The end is not near for George Zimmerman," he said.
Contributing: Yamiche Alcindor