Police seal off the Christiania neighborhood after riots broke out in Copenhagen Monday Dec. 14, 2009. Police detained up to 200 people after protesters set fire to street barricades in the downtown Copenhagen neighborhood. Protesters hurled fire bombs at helmeted riot officers who responded with tear gas, police spokesman Johnny Lundberg told The Associated Press. He said there were no immediate reports of injured. It wasn’t immediately clear whether the unrest was connected to the U.N. climate conference. (AP Photo/Thibault Camus)