re: Brown charged with 2nd Deg murder as a juvenile?

Not relevant.

Robbery - relevant not because of why encounter was initiated, but as possible explanation for Brown's actions/reactions to police.

Pot in system - only relevance is if there was enough in Brown's system to make him paranoid, thus heightening his reaction to the police encounter (and, the whole "pot makes the user mellow" argument is shot to shite by the store video).

Again... we are being fed bits and pieces of information by BOTH sides. Conclusions should wait until all the FACTS are known.