Video courtesy: www.youtube.com CalTV - www.caltv.org and www.youtube.com US police in riot gear have clashed with student protesters at the University of California, Berkeley, after they refused to dismantle their camp. Tents were erected following a march against tuition fee increases for students - which was part of the broader Occupy Wall Street movement. Several activists were arrested, some were beaten by police with batons. RT on Twitter twitter.com RT on Facebook www.facebook.com