The fact remains that the police told that racist killer Zimmerman to stay in his vehicle and not to pursue Trayvon Martin. And he disobeyed them, got out, chased Martin down, and gunned him down in cold blood.
That doesn't make him innocent. That makes him a murderer who got lucky to have gotten a shitty prosecutor who couldn't put together a strong case. It also makes him the beneficiary of a twisted law that protects killers who use handguns to murder with.