stylistic:style_transfer
Revolution and Hutu–Tutsi relations after independence

After World War II, a Hutu emancipation movement began to grow in Rwanda, fuelled by increasing resentment of the inter-war social reforms, and also an increasing sympathy for the Hutu within the Catholic Church. Catholic missionaries increasingly viewed themselves as responsible for empowering the underprivileged Hutu rather than the Tutsi elite, leading rapidly to the formation of a sizeable Hutu clergy and educated elite that provided a new counterbalance to the established political order. The monarchy and prominent Tutsis sensed the growing influence of the Hutu and began to agitate for immediate independence on their own terms. In 1957, a group of Hutu scholars wrote the " Bahutu Manifesto ". This was the first document to label the Tutsi and Hutu as separate races, and called for the transfer of power from Tutsi to Hutu based on what it termed "statistical law".

On 1 November 1959 Dominique Mbonyumutwa, a Hutu sub-chief, was attacked close to his home in Byimana, Gitarama prefecture, by supporters of the pro-Tutsi party. Mbonyumutwa survived, but rumours began spreading that he had been killed. Hutu activists responded by killing Tutsis, both the elite and ordinary civilians, marking the beginning of the Rwandan Revolution. The Tutsi responded with attacks of their own, but by this stage the Hutu had full backing from the Belgian administration who wanted to overturn the Tutsi domination. In early 1960, the Belgians replaced most Tutsi chiefs with Hutu and organised mid-year commune elections which returned an overwhelming Hutu majority. The king was deposed, a Hutu-dominated republic created, and the country became independent in 1962. As the revolution progressed, Tutsis began leaving the country to escape the Hutu purges, settling in the four neighbouring countries: Burundi, Uganda, Tanzania and Zaire. These exiles, unlike the Banyarwanda who migrated during the pre-colonial and colonial era, were regarded as refugees in their host countries, and began almost immediately to agitate for a return to Rwanda. They formed armed groups who launched attacks into Rwanda; these were largely unsuccessful, and led to further reprisal killings of 10,000 Tutsis and further Tutsi exiles. By 1964, more than 300,000 Tutsis had fled, and were forced to remain in exile for the next three decades.

Grégoire Kayibanda presided over a Hutu republic for the next decade, imposing an autocratic rule similar to the pre-revolution feudal monarchy. He was overthrown following a coup in 1973, which brought President Juvénal Habyarimana to power.Pro-Hutu and Anti-Tutsi discrimination continued in Rwanda itself, although the indiscriminate violence against the Tutsi did decrease somewhat. Habyarimana founded the National Republican Movement for Democracy and Development (MRND) party in 1975, and promulgated a new constitution following a 1978 referendum, making the country a one-party state in which every citizen had to belong to the MRND.

At 408 inhabitants per square kilometre (1,060/sq mi), Rwanda's population density is among the highest in Africa. Rwanda's population had increased from 1.6 million people in 1934 to 7.1 million in 1989, leading to competition for land. Historians such as Gérard Prunier believe that the 1994 genocide can be partly attributed to population density.