Here is the image etched into the minds of readers around the world.
The following video is an interview of the witnesses to this event where they discuss what the police were doing that crated a situation that could have been lethal to many if the protesters were not trained to be non violent.
In the video you can see the woman Liz Nichols, being struck by a baton in the throat shortly before she was not only peppersprayed in the face but also dragged away and arrested by police subsequent to the chemical attack.