Zimmerman Neighbors Give Graphic Testimony on Night of Alleged Murder

Jonathan Good claims he saw Trayvon Martin on top of George Zimmerman during shooting.
3:27 | 06/29/13

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Transcript for Zimmerman Neighbors Give Graphic Testimony on Night of Alleged Murder
And now, to the most closely-watched trial in the country. And graphic testimony from george zimmerman's neighbors about what they saw and heard the night trayvon martin was killed. But will any of it prove if zimmerman was acting in self-defense? Or was he stalking the unarmed teen? And then there's the issue of zimmerman's attorney and a highly controversial family photo. Here's abc's matt gutman. Reporter: This morning, this selfy by don west, stirred more controversy, in the zimmerman murder trial, already the most racially-charged in memory. West is pictured with two of his daughters eating ice cream cones, the kopgs, we beat stupid di celebration cones. A representative for west said he shot it monday. But one of his daughters, molly, posted the picture thursday, after west spent nearly two days attacking the credibility of the prosecution's star witness, in part by exposing her inability to read this lette I don't read cursive. Reporter: West said through a spokesperson, he didn't know his daughter had posted the picture. But they seemed to make headway friday, when they reenforced the argument. Trayvon martin was on top, correct? Yes. And he was reining blows on zimmerman, right? Tt's what it looked like. Reporter: In the dark, the prosecution asked, how much did he really see? When they're going like this -- I could not hear that, no. Could you hear this? No. Reporter: Then, came jonathan manollo, the first person to speak with zimmerman after the fight. You asked him what happened. And he said, this guy was beating me up, and I shot him. I had to defend myself and i shot him. Reporter: One of the questions asked all day, were zimmerman's sewers severe enough to warrant using deadly force against the 17-year-old boy? Physician assistant lindsay folgate treated zimmerman the next day. Saying zimmerman may from saved his life by firing the gun. Everything appeared intact. Reporter: For "good morning america," matt gutman, abc news, miami. Let's bring in legal analyst and defense attorney, deborah flom. Good morning. We heard jonathan good say he saw trayvon martin on top of george zimmerman. Is that a blow to the prosecution here? I don't think it is. Three other witnesses testified they saw zimmerman on top. Sorry. They saw zimmerman on the bottom. There are varying versions of events here. At the end of the day, it's going to come down to which witness you find credible. We have one week of testimony down. What is the biggest remaining challenge for the prosecution? I think for the prosecution, their biggest challenge is going to be proving second-degree murder. And can they do that? I mean, what's the bar for that? They have to show that there was indifference for human life. And that there was evil or malicious intent. And here, I think that they can do that. Also, the defense is going to have to show that zimmerman's use of lethal force was justified. And I don't believe, based on the testimony so far, that they can show that. It's going to be up to him to testify and explain why his lethal force was justified.

This transcript has been automatically generated and may not be 100% accurate.

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