Rwandan genocide
Most victims of the genocide were killed in their own villages.  Often, they were killed by their own neighbors.  Government radio stations encouraged regular people to kill their Tutsi neighbors.  Hutus who refused to kill Tutsis were often executed immediately.  Husbands killed their Tutsi wives because they were scared of being killed if they refused.  There were even priests and nuns convicted of killing people who were trying to hide in churches.  As historian Richard Prunier explains: during the genocide, "Either you took part in the massacres or you were massacred yourself."p. 247