Protesters rallying against police violence storm a lecture with PayPal co-founder Peter Thiel at the University of California at Berkeley campus in Berkeley, California December 10, 2014.Police said more than 100 demonstrators marched in Berkeley, California, which has a history of social activism. Under cloudy skies, turnout was smaller than earlier in the week, when demonstrators in the area threw rocks at police and shut down a major freeway. REUTERS/Noah Berger (UNITED STATES - Tags: CIVIL UNREST EDUCATION)