Mandela: universal glory masking bitter defeat?

Much is being written today about Nelson Mandela, who died yesterday. Here is Slavoj Zizek, writing in today's New York Times:

At this precise conjuncture, radical emancipatory politics faces its greatest challenge: how to push things further after the first enthusiastic stage is over, how to make the next step without succumbing to the catastrophe of the “totalitarian” temptation – in short, how to move further from Mandela without becoming Mugabe.

If we want to remain faithful to Mandela’s legacy, we should thus forget about celebratory crocodile tears and focus on the unfulfilled promises his leadership gave rise to. We can safely surmise that, on account of his doubtless moral and political greatness, he was at the end of his life also a bitter, old man, well aware how his very political triumph and his elevation into a universal hero was the mask of a bitter defeat. His universal glory is also a sign that he really didn’t disturb the global order of power.