It can't be self-defense if you instigate the confrontation. Does everyone have selective memory? Trayvon was feet away from the house where he was staying. He was on a walkway between buildings. Zimmerman got out of his SUV and pursued Trayvon several hundred yards before the murder. Zimmerman actively got out of his truck and followed Trayvon. According to the female Trayvon was talking to, Zimmerman made no attempt to identify himself as neighborhood watch. His first words to Trayvon were, "What are you doing around here?" What business is that of Zimmerman's. He wasn't on patrol. He didn't have a watch partner. He was on an errand to the store. He had a gun. This was not self-defense. Period.