It seems tear-gas is the choice of the enviro-friendly Danes:
COPENHAGEN — Police officers fired tear gas and wielded batons on Wednesday to beat back hundreds of demonstrators outside the global climate meeting here, as a police spokesman said 250 people had been arrested.
The police tried to disperse the chanting, drum-beating protesters who had marched from a train station about a mile away to try to make their way to the Bella Center, where representatives from nearly 200 countries are meeting to try to reach an accord on climate change. A group of 50 to 100 delegates emerged from the convention center, seeking to meet with the protesters, but they, too, were driven back by the police.
In another development, the Danish chairwoman of the conference, Connie Hedegaard, said she was stepping down and that the Danish prime minister, Lars Lokke Rasmussen, would take her place as heads of state from around the world begin arriving in Copenhagen. Ms. Hedegaard, a conservative, was Denmark’s minister of climate and energy and her placement as chairwoman of the conference was seen as part of a shifting of global environmental issues from the fringe into the political mainstream.
I was kinda hoping for Tasers.