Transcript for Opening Statements Begin the Detroit 'Porch Shooting' Murder Trial
Now to the explosive start to the trial of a man who fatally shot an unarmed young woman on his porch. Theodore wafer claims he thought renisha Mcbride was breaking foo his home in the wee hours of the morning and ABC's Alex Perez has that story. Reporter: Theodore wafer's trial beginning with emotional and at times theatrical opening arguments Wednesday. Boom, boom, boom. Front door. He gets on the ground. Crawling. In fear. Reporter: Defense attorneys arguing waver feared for his life when he shot and killed 19-year-old renisha Mcbride through the screen door of his suburban Detroit home last November. But the prosecution said otherwise. The investigation will show you that there was no signs of any attempted breaking into this house. Reporter: Investigators say Mcbride was drunk and had injured herself in a car accident when she stumbled on to his porch in the middle of the night pounding on the door looking for help. This is the door he shot through. Is that going to keep anybody out? No. Reporter: At the center of the trial a Michigan law that allows a person to use deadly force to defend themselves this their own home if they believe they're in danger of death or great bodily harm. Prosecutors argue Mcbride was unarmed and posed no threat to him. The screen door that she was shot through was still locked at the time that the police got there. Reporter: Mcbride's death has divided this community. All: Justice for -- Reporter: Some comparing it to the death of trayvon martin. Are you familiar with that picture? Yes. Reporter: On the witness stand her emotional mother. What is that a photograph of? My daughter. Reporter: Breaking down. Wafer has pleaded not guilty. At this point it's still unclear if he will testify. This trial expected to last ten days.
This transcript has been automatically generated and may not be 100% accurate.