Home › Multimedia › World in picture › Rwanda Marks with the World 25 Years Since Infamous Genocide. aaa Rwanda Marks with the World 25 Years Since Infamous Genocide. About Islam 07 April, 2019 Commemorations have begun in Rwanda to mark the 25th anniversary of the genocide that killed about a tenth of the population. The East African country will mourn for 100 days, the time it took in 1994 for 800,000 Rwandans to be massacred.