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Sunday marks the 25th anniversary of the beginning of the 1994 Rwandan genocide. The country will mourn for 100 days, the time it took for 800,000 Rwandans to be massacred. Most were minority Tutsis, killed by ethnic Hutu extremists. The Rwandan president and other dignitaries were among those paying their respects to the victims. They lit a "flame of remembrance" that will burn for 100 days in memory of the massacre.