So, judging from what you’re saying here, you believe Martin went out of his way to chase down Zimmerman? According to all of the case files, that’s what happened. Why? Who knows. I wasn’t there, I can only use the information given to me to make a hypothesis about that.
And for the last sentence, Zimmerman admitted he killed Martin, but he did not murder him. And a jury did not find him guilty of murder, or manslaughter, based on the evidence presented to them either.