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,
Gikondo massacre Gikondo massacre The Gikondo massacre was the mass murder of about 110 people of Tutsi identity, including children, who sheltered in a Polish Pallottine mission church in , Kigali. The massacre took place on April 9, 1994 and was executed by Interahamwe militia under supervision of the Hutu presidential guard. The massacre was the first absolute proof of a genocide discovered by UNAMIR during the Rwandan Genocide in 1994. The Rwandan Genocide began on April 6, 1994, after the plane carrying Rwandan president Juvénal Habyarimana and Cyprien Ntaryamira, the president of Burundi on board was shot down while approaching the