Until 1994 South Africa was ruled by a white minority which considered itself superior, and which was so determined to hang onto power that it took activists most of the last century before they succeeded in their fight to get rid of apartheid and extend democracy to the rest of the population.
The white governments had grand social engineering schemes which separated the races and involved the forced resettlement of hundreds of thousands of people. They poisoned and bombed opponents and encouraged trouble in neighbouring countries.
The apartheid government eventually negotiated itself out of power, and the new leadership encouraged reconciliation. But the cost of the years of conflict will be paid for a long time yet, not least in terms of lawlessness, social disruption and lost education.