GREEN
03/18/2010 05:12 am ET | Updated May 25, 2011

Copenhagen Protest Turns Violent, Hundreds Arrested (VIDEO)

COPENHAGEN, December 12th--Anarchists launched cobblestones, explosives and homemade weapons during an an otherwise peaceful protest at the United Nations Climate Summit in Copenhagen. The crowd, a reported 50,000 including young children, moved without violence until an unidentified anarchist group of several hundred--most covering their faces with ski masks and hoods--began to converge, shooting explosives at nearby buildings and police. One homemade cannon launched cobblestones over the crowd, breaking the window of a nearby police van.

Environmental reporter Olivia Zaleski and filmmakers Gabriel London and Peter Buntaine were on the scene--watch their footage below:

Immediately following the explosions, peaceful protesters dispersed for a time as riot police moved in to secure the area. So far, Danish police have confirmed 400 arrests related to the incident, but they expect more violence and further arrests throughout the evening and into the night.

Watch continuing reports on COP15 from environmental reporter Olivia Zaleski and filmmakers Gabriel London and Peter Buntaine at Earthkeeper.org .