Tryvon was a wannabe gangster, yes. The music he listened to, his FB photos, where he tweeted from, how he dressed, etc. Yes, Tryvon was a wannabe gangsta.
I say 'wannabe' because I don't know that he ever actually joined a gang. He certainly enjoyed the lifestyle, though.
There are a few events that occurred in between Tryvon walking home from the store and Mr. Zimmerman pulling the trigger that you're forgetting to include...but who needs facts, right?
When you start a fist fight instead of simply calling the police, when you knock a guy down and threaten his life, when you reach for his gun...you're not a victim. You're an agressor.
We've had threads and threads and threads on all this already. I'm not going to rehash it. I would just copy/paste what has been said on other TM/GZ threads, offering little original content, bearly more than the 10 character limit the forum requires to post.
You called Tryvon a kid, and I gave you the point. You're right, Tryvon was a kid, because he certainly didn't behave like a mature adult.