'in'/'out' groups, eg: Hutu's vs Tutsi's, social uncertainty, devaluation, identity, social identity theory, destructive ideologies, stereotypes
eg: PM's plane shot down
eg: Rwandan's "culture of obedience"
eg: hate radio station telling Hutu's to kill Tutsi's
eg: Hutu's told that Tutsi's were not originally from Rwanda
eg: USA/Western countries
eg: USA had "no incentive to intervene"
aggression (displaced), scapegoat theory, realistic conflict theory, eg: Nyarubuye church massacre
eg: extremist Hutu PM