I'd like to know more about him fitting the description of a robbery suspect. I would hope that the actual description given to this and other Officers was presented in court so that it could be presumed by the jury that other Officers would have thought the same thing when they pulled Castile over.
Having said that, I just watched the video again and it appears the Officer just snapped. He walked up calmly and was also talking in a calm, professional manner and then boom! Question for Token. If you approach a vehicle and notice that the driver fits the description of a robbery suspect or some other crime, do you talk to him at the window like this Officer did or would you immediately have him get out of the car? Not saying either is right or wrong, just wondering procedurally, what's the proper call?