KATHMANDU, Nepal (CNN) -- Activists are vowing to go ahead with plans for massive street protests in Kathmandu Thursday, despite an 18-hour government curfew that came into effect at 2 a.m. (8:15 p.m. Wednesday GMT) and a threat to shoot violators. http://www.cnn.com/2006/WORLD/asiapcf/04/19/nepal/index.html