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
Rwandan genocide magazine called "Kangura", which became popular throughout the country. This published anti-Tutsi propaganda, including the Hutu Ten Commandments, an explicit set of racist guidelines, including labelling Hutu who married Tutsi as "traitors". In 1992, the hardliners created the Coalition for the Defence of the Republic (CDR) party, which was linked to the ruling party but more right wing, and promoted an agenda critical of the president's alleged "softness" with the RPF. Following the 1992 ceasefire agreement, a number of the extremists in the Rwandan government and army began actively plotting against the president, worried about the possibility of Tutsi being