Origins of Hutu, Tutsi and Twa phenotype, genotype, cultural memory of inhabitants of Rwanda, archeology, and linguistics. Most Tutsis and Hutus carry the E1b1a paternal haplogroup, which is common among Bantu populations. More recent studies have de-emphasized physical appearance, such as height and nose width, in favor of examining blood factors, the presence of the sickle cell trait, lactose intolerance in adults, and other genotype expressions. Excoffier et al. (1987) found that the Tutsi and Hima, despite being surrounded by Bantu populations, are "closer genetically to Cushites and Ethiosemites". Another study concluded that, while the sickle cell trait among the Rwandan Hutu was comparable to that
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