Has anyone stopped to think about the fact that there’s Trayvon, banging Zimmerman’s head into the concrete, and a neighbor comes out and yells, “Knock it off!” and does Trayvon jump up and run away? No, he continues his head bashing. A normal criminal finding himself in this situation (bashing someone’s head into the concrete) would get up and run away, not wanting to get caught. But Trayvon continued. He was either under the influence of some substance, or he had serious psychological problems.
Trayvon wasn't from Sanford, where this happened. He was from Miami Gardens which by all accounts I've read is a much different place. He might not even have considered that someone would actually call the cops about a beat-down, or talk to them if they showed up.