According to the Rwandan government 1.2 million people were killed in 1994 during the Rwandan genocide. The UN says 800,000 died, most of those murdered were ethnic Christian Tutsis.
During that genocide, tens of thousands of Christian Tutsis fled into Muslim mosques to escape from the machete-wielding Hutu mobs.
And their lives were spared because many Hutus believed Muslims were evil and were afriad to go into mosques.
Al Jazeera's Yvonne Ndege tells the story of survivors who narrowly escaped death, and the Islamic resistance to the genocide.