In January 1986, the National Resistance Army (NRA) of south-west Uganda born Yoweri Museveni overthrew President Tito Okello, an ethnic Acholi. This started a period of unrest. When they tried to liberate the whole country, the NRA were responsible of many atrocities on the people of Acholi. This made some Acholis want to fight against these acts. Reports sometimes say that the Acholi were afraid to lose their traditional (usual) control of the national military. They were also very worried that the NRA would want retribution for the violent counterinsurgency, especially the actions of the army in the Luwero triangle. By August 1986, a complete popular insurgency had started in northern regions that the new government soldiers occupied.