You may have seen images of peaceful protestors at UC Davis being sprayed with chemical agents. Here's a link to the video. A couple of images below.
Watch this incredible video of the Chancellor of the school walking to her car. She had refused to leave the school building because students had gathered because of their outrage associated with what had happened. The students apparently decided to line the pathway to her car and remain in silence. It's very powerful.
Glenn Greenwald comments here. Read an open letter from an untenured professor at UC Davis calling for the Chancellor's resignation and describing the events that lead to the pepper spraying incident. Also read this NY Times column written by a 70 year old poet laureate clubbed and shoved, along with his wife, because he went there to see what was happening and couldn't believe the stories of police brutality.