Hutu reify the biological distinctions, generating a taller elite and a shorter underclass, but with little relation to the gene pools that had existed a few centuries ago. The social categories are thus real, but there is little if any detectable genetic differentiation between Hutu and Tutsi. Tishkoff et al. (2009) found their mixed Hutu and Tutsi samples from Rwanda to be predominately of Bantu origin, with minor gene flow from Afro-Asiatic communities (17.7% Afro-Asiatic genes found in the mixed Hutu/Tutsi population). Hutus speak Rwanda-Rundi as their native tongue, which is a member of the Bantu subgroup of the Niger–Congo language
Genocides in central Africa Ituri conflict and the mass murder of Pygmies known as "Effacer le tableau". In Uganda, 300 thousand people were murdered during the regime of Idi Amin and 500 thousand during the rule of his successor, Milton Obote. Amin's genocides targeted the Acholi and Lango peoples; these two groups went on to murder other groups (mainly the Baganda) under Obote's regime. In the early 1970s, over 150 thousand Hutu people were killed by Tutsi people in Burundi by order of General Michel Micombero. Twenty years later, one million Tutsi people were murdered by Hutu people during the 1994 Rwandan genocide. In