Description:Hundreds of people walked down the main street of Oslo on Saturday in a torch light parade to honor Nobel Peace Prize winners. Liberian President Ellen Johnson Sirleaf, women's rights activist Leymah Gbowee and Yemeni campaigner Tawakul Karman were given the award for "their non-violent struggle for the safety of women and for women's rights to full participation in peace-building work".(1:56)