Four minutes. That felt like a long time for you. We get to ponder what Martin was thinking. Zimmerman said "he's running." Four minutes to walk home, run home. Four minute mile. With the opportunity to go home, he did not (or at least he didn't stay there). Somebody decided they were angry, ticked off, or had ill will spite or hatred. Somebody decided it wasn't over with the running.
The person who decided this was going to become a violent event was the guy who didn't go home. When the state told you that Martin had no decisions, that Zimmerman planned this? Really? Four minutes of planning (by Martin) and they want you to ignore it. With those four minutes, let's use your common sense.
Zimmerman going back to his car with that little baby flashlight. Martin on the phone, talking with Rachael (she didn't want to be involved in this case). Throw out everything Zimmerman said - he should have shut up and not told anything to law enforcement. So, let's make believe all his self serving statements are out. What do we have?
Show picture of Zimmerman bloody face. Good thing we have it, because otherwise all we would have is the cleaned up picture. But we have the bloody face, smashed nose picture. We have 40 seconds of screaming. O'Mara figured, once you find out who is screaming, case over. Challenges the state to produce a theory of why Martin would be screaming while he's beating on Zimmerman.
On the voice, now you do get to decide (or not) who was screaming. Under reasonable doubt, who gets the benefit? Zimmerman. Then the statement by Manalo. De la Rionda's "I killed the guy", well, use your memory. Zimmerman actually said "I shot somebody." What should he do, think about how his remark is going to be used 1 year and a half later? Smith says, right away, "Zimmerman said he was screaming for help." So this mastermind criminal knew, at that moment, that he better say he was the one screaming?
Hard to do justice to this closing in paraphrase form. O'Mara is doing much better than my notes reflect, I'll say that.