Ace looks at motives after today's developments in Ferguson, Missouri.
I can understand why Brown would grab for a gun, or assault a cop -- he had just committed a robbery. He would have a reason to do that. (Not a good reason, but a reason.)
On the other hand, I have trouble understanding why a cop would just gun Brown down. The entire theory seems to hang on the motive: Because he hated black teenagers and wished to murder them on general principles.