At the beginning of his speech, Mandela mentions “an extraordinary human disaster”. What does he mean by this? What is the “glorious … human achievement” he speaks of at the end?

Explanation

By human disaster Mandela means to say that coloured people have suffered a lot due to discrimination in the hands of whites. He considered it as great glorious human achievement that a black person became the president of a country where the blacks are not considered as human being and are treated badly.