4:31 p.m. UC Davis Chancellor apologizes for Friday

Ian Lee, a freshman student, pepper sprayed on Friday spoke earlier in the protest and a video of his speech is now on YouTube. Lee calls for Chancellor Katehi’s resignation. He asks why riot police have never been sent to any fraternity party on campus.

4:31 p.m. UC Davis Chancellor apologizes for Friday

Chancellor Katehi came to stage to speak to the crowd. Lee Fang, a writer for Think Progress, reported on Twitter that her comments were short and apologetic — and that she was met with some chants of “resign.” The audience cheered when she said, “I do not want to be chancellor of the university we had on Friday.”

3:39 p.m. The protests start

Thousands fill the quad at UC Davis for the protest march. Some of the students caught in the pepper spray are speaking about their experience. We’ll be following along a Twitter list of students and participants for updates.

8:38 a.m. Police Chief Annette Spicuzza is suspended

Davis Police Lt. John Pike uses pepper spray to move Occupy UC Davis protesters. (Wayne Tilcock/AP)

Two police officers and the police chief Annette Spicuzza have been suspended pending an investigation into the incident. Students and a faculty group called for UC Davis Chancellor Linda Katehi to resign.

On Saturday, students and Katehi had a brief standoff on campus, which ended with hundreds of students sitting along a path silently greeting Katehi as she walked to her car. Students called it Katehi’s “walk of shame.” It is a solemn and powerful video:

We’ll update with more information as the protest starts in Davis.

Chancellor Katehi sent a letter to the university saying the school had no option but to ask the police to assist in the removal of the protesters. A music professor at UC Davis, Bob Ostertag wrote in an op-ed on the Huffington Post that the school had plenty of other options: “To begin with, the chancellor could have thanked them for their sense of civic duty. The occupation could have been turned into a teach-in on the role of public education in this country. There could have been a call for professors to hold classes on the quad. The list of “other options” is endless.”

It’s a question cropping up in cities across America: Should police be using pepper spray on#Occupy protesters? If not, what other options should they use?