It's funny that none of you folks here can honestly say you have any idea what happened, but you feel free to just up and jump to conclusions about this Zimmerman character.
This is just the black community jumping to conclusions again (like the Duke lacrosse case). Calling everything and everyone "racist".
The way I look at it, we are trying to figure out whether it's murder or just manslaughter. He followed Trayvon Martin and escalated the situation. Now, whether or not Trayvon jumped him or not, we don't know. And then he could have shot him in self defense but he still would have put himself in that situation by following someone. We should know if it was self defense by finding out how far the gun was shot from. I don't know whether that determination has been made or not, but it's pretty clear the police has been incompetent regarding this case.
According to Zimmerman, he stopped following and left the car to get an address, possibly on the request of 911. If he was requested, there might be a record.
Again, forensics will be the key, and before I damn or defend Zimmerman, I've like to see some actual evidence.