Distance and culture separate the Balkans, South Africa and Rwanda from one another. But a history of ethnic hatred unites the three regions.

In the 1990s, the people of the Balkans fought in four wars that killed 3,000 people and displaced 1.5 million people. Certain people in Bosnia and Kosovo were targeted because of their ethnicity.

South Africa's apartheid system discriminated against the black African majority for more than 50 years.

The Rwandan government killed between 500,000 and 1 million ethnic minorities and political dissidents in the 1994 genocide.

These tragic events still occurred, even though the international community said "never again" after the Holocaust.

Future generations can learn from the legacies of ethnic hatred.