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,
Georges Rutaganda Georges Rutaganda Georges Rutaganda (November 27, 1958 – October 11, 2010) was the second vice-president of the Rwandan Hutu militia "Interahamwe". Rutaganda was partly responsible for the Rwandan genocide of 1994. Prosecutor James Stewart stated that "Without Georges Rutaganda, the Rwandan genocide would not have functioned the way it did." He was on radio RTLM (Radio Télévision Libre des Mille Collines) in Kigali in 1994, encouraging Interahamwe Militia to exterminate all Tutsis. It was alleged that Rutaganda captured, raped, and tortured Tutsi women in the Interahamwe Hideouts in Kigali. Other accounts state that Rutaganda captured Tutsi prostitutes believing them to