APD incident -- Breaion King

The BLM folks claim that police officers mistreat black motorists frequently, and that usually only the killings come to light. I wonder how often there are incidents like the one in this video:

http://abcnews.go.com/US/austin-police-chief-sickened-saddened-arrest-breaion-king/story?id=40800141l

Obviously, the comments in the car are the worst part, but even the police chief admits that the stop itself wasn't approached correctly.

 

Officer should have been fired a year ago for his conversation in the car alone.

I don't know if the arrest would have been any different if a white person would have disobeyed in the same manner. I have an inkling it probably would not have made a difference. I saw many a white frat kid on 6th mouthing off get treated the same way.

And I don't think one can difinitevely say the conversation in the car is any indication of premeditated discrimination in this arrest. She may have started this conversation about race in the car and he gave his perspective.

 

So what exactly was wrong with what the cop said?