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The Boston Globe

Nation

Determining screams on 911 tape dominate Zimmerman trial

SANFORD, Fla. — Trayvon Martin’s father testified Monday that he never denied it was his son’s voice screaming for help on a 911 call, contradicting police officers’ earlier testimony at George Zimmerman’s second-degree murder trial.

Tracy Martin was the latest witness called by lawyers on both sides who are seeking to convince jurors of who was the aggressor in the confrontation that left Trayvon Martin dead.

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