Tutsi were murdered by the former and "at least as many" were killed by the latter. Since the 2000 Arusha Peace Process, today in Burundi the Tutsi minority shares power in a more or less equitable manner with the Hutu majority. Traditionally, the Tutsi had held more economic power and controlled the military. A similar pattern of events took place in Rwanda, but there the Hutu came to power in 1962. They in turn often oppressed the Tutsi, who fled the country. After the anti-Tutsi violence around 1959-1961, Tutsis fled in large numbers. These exile Tutsi communities gave rise to Tutsi
Hutu of Rwandan national unity, but has been criticized as an attempt at historical revisionism. Still others suggest that the two groups are related but not identical, and that differences between them were exacerbated by Europeans, or by a gradual, natural split, as those who owned cattle became known as Tutsi and those who did not became Hutu. Mahmood Mamdani states that the Belgian colonial power designated people as Tutsi or Hutu on the basis of cattle ownership, physical measurements and church records. There is an ongoing debate as to whether the Hutu and Tutsi are really separate groups or not;