According to her, she was walking in front of them for half an hour. It wasn't like she was leaving. And there were many people there that you couldn't see on the video, and much more going on than the few mintues of video caught. Do you really think there was a group of cops in riot gear becuase of one lady? No, they were there to control a mob. Not always possible to cuff and stuff a large group of protesters.
Couple other areas to note:
After she was shot the first time she immediatley turned and started showing off for the cameras. Yeah, she's just as innocent as can be.
After she was shot the first time, in the leg, SHE DIDN'T LEAVE!!!
These people were instigating the cops because their mob mentality told them they were invincible. They are lucky they weren't hit with batons.