Berkeley police arrest 11 during demonstration at UC Berkeley

Police arrested 11 people in a demonstration today on the campus of the University of California at Berkeley, police said.

While the so-called "Free Speech Week" planned at the university for this week was canceled, scheduled far-right speakers appeared at the university's Sproul Plaza around noon today.

Scheduled speakers were Milo Yiannopoulos, a self-described "troll" - widely defined as someone who deliberately sows discord online - and two other far-right media personalities, Mike Cernovich and Pamela Geller.

The university's police department put measures in place to ensure the safety of the campus community, university officials said.

Libraries and other buildings that serve students, specifically Eshelman and Martin Luther King Jr. Student Center, were open and anyone who planned to be on campus needed to carry their Cal ID in order to gain access to buildings, according to university officials.

With regard to the counter-protests, "We encourage you to think critically about your actions and not react to the provocations of others," campus officials said in a statement.

"If the actions around you are not consistent with your own values and goals, please remove yourself from the situation. If you choose to remain in an area where violence is occurring, you may be subject to arrest or removal."

When Yiannopoulos was last scheduled to speak at UC Berkeley in February, protests caused more than $100,000 in damage to the campus, and more than a dozen businesses were vandalized in the city's downtown area, according to university officials.

Police said no one reported being injured today and no one reported any property damage.