Some pro-democracy protesters in Hong Kong began to remove barricades Sunday after police warned of taking "all necessary measures" to clear the streets by the beginning of the work week. Students occupying the area outside government headquarters agreed to remove some barricades that have blocked the building's entrance. However, others were defiant chanting, "We will be back. Fight till the end," pledging to continue their occupation of key streets in an eight-day struggle that has become known as the "Umbrella Revolution"