It's simply one of many names for a doctrine based on a sense of superiority of one people over another.
Other names are "racist" and "fascist" (remember the Nazi's concept of "Ubermensch"
http://en.wikipedia.org/wiki/%C3%9Cbermensch).
here's Mandela on Apartheid in Israel/Palestine:
http://progressiveaustin.org/mandelap.htm...
"Perhaps it is strange for you to observe the situation in Palestine or more specifically, the structure of political and cultural relationships between Palestinians and Israelis, as an apartheid system. This is because you incorrectly think that the problem of Palestine began in 1967. This was demonstrated in your recent column "Bush's First Memo" in the New York Times on March 27, 2001."
...
"Apartheid is a crime against humanity. Israel has deprived millions of Palestinians of their liberty and property. It has perpetuated a system of gross racial discrimination and inequality. It has systematically incarcerated and tortured thousands of Palestinians, contrary to the rules of international law. It has, in particular, waged a war against a civilian population, in particular children."
...