Just look at his text messages. Look at his cell phone pictures. For how long you have been following this case, I would think you might do a little research.
Text messages and pictures do not a gang banger make. You're placing your own personal biases on Martin. And my opinion of this is based on the texts and pictures I've seen; so maybe you have seen something I have not. Care to describe the things that convinced you he was a gangbanger?