Hutu Rwanda, this led to the "Social revolution" and Hutu violence against Tutsis. Tens of thousands of Tutsis were killed and many others fled to neighboring countries, such as Burundi, Uganda and expanding the Banyamulenge Tutsi ethnic group in the South Kivu region of the Belgian Congo. Later, exiled Tutsis from Burundi invaded Rwanda, prompting Rwanda to close its border with Burundi. In Burundi, a campaign of genocide was conducted against Hutu population in 1972, and an estimated 100,000 Hutus died. In 1993, Burundi's first democratically elected president, Melchior Ndadaye, who was Hutu, was believed to be assassinated by Tutsi officers,
Islam in Rwanda the Rwandan Genocide of 1994, Muslims were held in low regard, because they were seen as traders, in a land where farmers are highly regarded. The Muslim population before the genocide was 4% which was unusually low compared to that of neighbouring countries. Muslims were also affected by the genocide. There were only a few incidents in which Tutsis in mosques were attacked. The most widely known example occurred at Nyamirambo Main Mosque, where hundreds of Tutsi had gathered to take refuge. The refugees in the mosque fought off Hutu militias with stones, bows and arrows, putting up stiff resistance