I would say that there is a better than even chance that Wilson will be indicted for political reasons. The politicians think that a trial will calm the restless natives.
But that will only put off the inevitable. Any fair jury will acquit Wilson and as the article states
Browns family and supporters will not be persuaded by the autopsy report or eyewitness statements that back Wilsons account of the incident
Or to extrapolate from that statement; the Browns and their supporters will accept nothing less than a conviction for murder.
When Wilson receives a NO BILL or is acquitted there will be riots
Exhibit A: Zimmerman, George