The Daily Californian, the UC Berkeley student newspaper, has good coverage of yesterday's "Day of Action" on campus, which "saw a largely calm protest punctuated by bursts of violence between demonstrators and police, leading to two arrests. Students were protesting state budget cuts that have resulted in higher tuition.
Curated video, photos, tweets, and other web content that tell the story of the protest below. (Note: Four-letter words included.)
Also, KTVU has raw video of some of the more violent confrontations.