I don't know, I'm just going on what I saw in the video. And for what it's worth, I've seen stomps worse than that in soccer games..........in fact, I wouldn't even call it a "stomp" but rather a "tennie rub"..........
Well, yeah, it was a cop. *If* is weren’t a cop, and he interfered in that way (no matter what you think of it) the other cops would have handed him his ass.