Its quite easy to see what and why they are doing it .
South Africa changed Government because of the Apartheid regime , people protesting against the South African apartheid regime caused the Government and Country to dissolve and a new order was installed .
They think if they can convince the World that Israel has an Apartheid system , then the World force Israel to dissolve and a new Palestinian country will replace Israel .
They aren't concerned about any discrimination, they just use it attack Israel