Hutu as was the person constitutionally entitled to succeed him. This sparked a genocide in Burundi between Hutu political structures and the Tutsi military, in which an estimated 500,000 Burundians died. There were many mass killings of Tutsis and moderate Hutus; these events were deemed genocide by the United Nations International Commission of Inquiry for Burundi. While Tutsi remained in control of Burundi, the conflict resulted in genocide in Rwanda as well. A Tutsi rebel group, the Rwandan Patriotic Front, invaded Rwanda from Uganda, which started a civil war against Rwanda's Hutu government in 1990. A peace agreement was signed, but
Origins of Hutu, Tutsi and Twa the importance of the pastoralist migrations. Still other studies point out that cultural transmission can occur without actual human migration. This raises the question of how much of the changes around the fifteenth and sixteenth centuries was the result of an influx of people as opposed to the existing population being exposed to new ideas. Studies that approach the subject of racial purity are among the most controversial. These studies point out that the pastoralist migrants and pre-migration Rwandans lived side by side for centuries and practiced extensive intermarriage. The notion that current Rwandans can claim exclusively Tutsi or Hutu