Scrum in Copenhagen

According to this NYT report, climate activists and protesters clashed with police in Copenhagen.  Protesters were attempted to reach the Bella Center, which is where the delagates are meeting.  Apparently, at least some of the delagates were willing to meet with the protesters, but police pushed them back inside the Bella Center.  Police used batons, tear gas, and a water cannon in their attempt to disperse the crowd.  At least 250 people were arrested.