This is two days old now, but I’ve been hearing the soundtrack on the radio, and I had to watch for myself.
First impression – these people didn’t have it that bad. The police were somewhat restrained compared to what I’ve seen at other times in other places. Try demonstrating somewhere like Pakistan or Bangladesh if you want to know what it’s like to get "roughed up." On the other hand, I’m not quite sure what prompted the police to move in to begin with. I realize the few minutes of video don’t show the entire context but I cannot imagine how using a baton on a person holding a camera benefits a free and open society. Unless the press were actively encouraging some sort of disturbance, I think the police were out of line there for sure.
Here’s another perspective: