Rwanda committed one of the worst genocides in history, purging a culture so similar to their own that it defies reason, and could only happen through decades of re-enforcement

Read: Belgians, for anyone who doesn't know. The Belgians encouraged the minority Tutsi's to believe they were god's gift to Rwanda, and the majority Hutus to believe they were peasant farmers and enforced this via identity cards stating so. Then the Belgian's relinquished control, but not before telling the Hutus to actively seek revenge to balance things. You couldn't make this up.