According to the Moroccan Kingdom, Western Sahara does not exist. Since 1975, when the old colonial power Spain withdrew from Western Sahara, Morocco has occupied the territory south of the border. The consequences are long-lasting, and Western Sahara's indigenous population (the Sahrawis) is separated in two captivities. 160,000 Sahrawis are displaced to the Sahara Desert in Algeria, where they still today live in Refugee Camps. The rest of the Sahrawis live under the Moroccan occupation in Western Sahara with no fundamental rights to express opinions and assemble. A war between Morocco and Western Sahara's Freedom Movement, Polisario, lasted until 1991 when the UN negotiated a ceasefire, promising a referendum about Western Sahara's independence.