I agree. But having that video go viral before the police could get their story straight was a big factor.
The Rodney King video was used in a different way- they only showed a few seconds of it, over and over, without showing King’s belligerence and refusal to follow instructions. That viral also had a huge influence.
Interesting thing about the King video is that the only thing the courts actually convicted for was in a section that was cut out of the video that got all the showings. In both criminal cases the jury found the section that was repeatedly shown represented a legitimate use of force.