I was just about to post that. Looks pretty unambiguous, although the anti-government morons will read whatever they want into it. Tried to run past the barricade, then obviously reached into his coat (which did end up having a gun in it). He was actually shot in the back, but he was facing down another officer at the time.
Certainly not "on his knees with his hands up" like some of the accounts being passed around.
Could have been reaching for his inhaler.