He was a night watchman. He was supposed to look for trouble.
He called the cops, backed off when told to. Trayvon circled around behind him and attacked him.
Trayvon admitted trying to kill him. If he didn't shoot Trayvon, Zimmerman would be dead.
If the exact same thing happened to an off-duty cop, it wouldn't even have made the news. Obama alone made this famous and defamed Zimmerman.
How did Trayvon admit that?