"Thousands of protesters gathered in the Danish capital Saturday to demand tough action by world leaders to curb global warming, but hundreds were detained as police tried to quell any potential violence. Extra police were on hand to monitor the crowd as it marched through the city, beating drums, waving signs and chanting. Nearly 1,000 protestors were detained by Danish police. But many protesters simply carried signs or dressed in costumes, such as penguins and polar bears. Organizers estimated that upwards of 100,000 people joined the protests, though Danish police estimate only 40,000 took to the streets. Police said 968 people were detained as a preventative action." CTV.ca had the story Dec. 12, 2009.