Question: What was a genocidal mass slaughter of Tutsi in Rwanda by members of the Hutu majority government, durring this time the former head of the Adventist Development and Relief Agency International chose to remain in the country?

Context articles: Rwandan genocide
Jombok Hoas
Adventist Development and Relief Agency
Rwandan Revolution
Gacaca court
Human rights in Burundi
Hutu Power
Safari Kimanzi
Carl Wilkens
Grégoire Kayibanda

The Rwandan genocide, also known as the genocide against the Tutsi, was a genocidal mass slaughter of Tutsi in Rwanda by members of the Hutu majority government.
 An estimated 500,000–1,000,000 Rwandans were killed during the 100-day period from April 7 to mid-July 1994, constituting as many as 70% of the Tutsi population.
 Additionally, 30% of the Pygmy Batwa were killed.
 The genocide and widespread slaughter of Rwandans ended when the Tutsi-backed and heavily armed Rwandan Patriotic Front (RPF) led by Paul Kagame took control of the country.
 An estimated 2,000,000 Rwandans, mostly Hutus, were displaced and became refugees.
Jombok Hoas is a non-profit adventure retreat run by the Adventist Development and Relief Agency (ADRA) situated in forest in the small village of Sry Tnong (near the town of Rovieng) in Preah Vihear Province, Cambodia.
The Adventist Development and Relief Agency International (ADRA or ADRA International) is a humanitarian agency operated by the Seventh-day Adventist Church for the purpose of providing individual and community development and disaster relief.
 It was founded in 1956, and it is headquartered in Silver Spring, Maryland, United States of America.
The Rwandan Revolution, also known as the Social Revolution or Wind of Destruction (Kinyarwanda: "muyaga" ), was a period of ethnic violence in Rwanda from 1959 to 1961 between the Hutu and the Tutsi, two of the three ethnic groups in Rwanda.
 The revolution saw the country transition from a Belgian colony with a Tutsi monarchy to an independent Hutu-dominated republic.
The Gacaca court (] ) is a system of community justice inspired by Rwandan tradition where "gacaca" can be loosely translated to "justice amongst the grass".
 This traditional, communal justice was adapted in 2001 to fit the needs of Rwanda in the wake of the 1994 Rwandan Genocide (also known as "Hutu vs Tutsi" ) where an estimated 800,000 people were killed, tortured and raped.
 After the genocide, the new Rwandan Patriotic Front's government struggled to pursue justice on such a massive scale, and therein to develop just means for the humane detention and prosecution of the more than 100,000 people accused of genocide, war crimes, and related crimes against humanity.
 By 2000, approximately 130,000 alleged genocide perpetrators populated Rwanda's prisons (Reyntjens & Vandeginste 2005, 110).
 Using the justice system Rwanda had in place, the trial of such massive numbers of alleged perpetrators would take well over 100 years during which Rwanda's economy would crumble as a massive amount of their population awaited trial in prison.
 For this reason they chose to adapt and create a large-scale justice system, which would work alongside the International Criminal Tribunal for Rwanda, in order to heal as a people and to thrive as a country.
Burundi is governed as a presidential representative democratic republic, with an estimated population of 10,557,259.
 The country has experienced a long history of social unrest and ethnic tension between the Hutu majority and Tutsi minority, with successive civil wars jeopardizing national development since Burundi’s decolonization as a Belgian territory in 1962.
 The most recent conflict broke out in 1993 with the assassination of Burundi’s first democratically elected President, Melchior Ndadaye, and led to large-scale violations of human rights and general impunity.
 In line with the Arusha Agreement of August 2000, peace was brokered between rebel groups the National Council for the Defense of Democracy–Forces for the Defense of Democracy (CNDD-FDD) and the National Forces of Liberation (FNL), and a new Constitution was adopted by national referendum in 2005.
 The Constitution established cognitive institutions of State, including the Executive, Judiciary, and Legislature, with a view to promoting the rule of law and a more cogent human rights framework.
Hutu Power was a supremacist ideology propounded by Hutu extremists in Rwanda.
 It contributed to the 1994 Rwandan genocide against the Tutsi.
 Hutu Power political parties and movements included the "Akazu", the Coalition for the Defence of the Republic and its "Impuzamugambi" paramilitary militia, and the governing National Republican Movement for Democracy and Development and its "Interahamwe" paramilitary militia.
Safari Kimanzi (or Kimanthi), best known as just "Safari" (born 20 August 1993) is a Kenyan who as a six-year-old boy received extensive plastic surgery over the course of 12 months to correct disfigurement of his face, neck, shoulder and hand caused by severe burns when he was an infant in Kenya.
 He was operated on by a team of volunteers at the Royal Prince Alfred Hospital (RPA) in Sydney, Australia, headed by senior plastic surgeon, Dr David Pennington.
 Safari spent almost twelve months in Australia, in and out of hospital, for his 14 operations.
 Before his surgery he was malnourished and only able to eat mashed bananas and milk because of severe contractures of his mouth and neck.
 His plight was discovered by Lesley Coverdale who was visiting with a friend in the area where Safari lived.
 She returned to Australia and began raising funds for his treatment.
 In a chance meeting with Ms Coverdale, Pennington, the Head of RPA's Department of Plastic Surgery, offered to operate on Safari gratis.
 Further funds to accomplish this were raised through the Adventist Development and Relief Agency (ADRA) and after nearly a year he was flown to Australia for treatment.
 At the end of his twelve-month treatment program in 2000, he was able to eat normally and was enabled to use his arm and hand for day-to-day activities.
Carl Wilkens is the former head of the Adventist Development and Relief Agency International in Rwanda.
 In 1994, he was the only American who chose to remain in the country after the Rwandan genocide began.
Grégoire Kayibanda (May 1, 1924December 15, 1976) was the first elected and second President of Rwanda.
 He led Rwanda's struggle for independence from Belgium, and replaced the Tutsi monarchy with a republican form of government.
 He asserted Hutu majority power.