My take is that RatBastard confused which cop is in question. Sounds like he thinks the one he saw in the video was the person who everyone is upset with. From what I can tell, the one RatBastard discribed was the on-duty cop who responded to the call, did his job, and did it exactly as he should have. No one had a problem with him.
It was the off-duty cop who got out of his Hummer and started waving his gun around and didn't even identify himself as a cop who the whole country is pissed off with, and rightfully so. Even if he would have IDed himself as such, there was absolutely no need for pulling a weapon out. You can argue all you want about the innocent snowball action, both with good and bad points, but in no way does that incident call for such extreme force.