Violence erupts at People’s Assembly protest By admin | December 17, 2009 LikeTweet EmailPrint A sanctioned protest organized by Climate Justice Action to Copenhagen’s Bella Center ended in violent clashes and arrests. Demonstrators pushed past police lines, prompting pepper spray and baton beatings from police. CNN reports that 250 demonstrators were arrested. UN Climate Change Conference. December 16, 2009. Support this story and all the stories from The Uptake. Donate.