Here is the definition of a bigot according to dictionary.com.
http://www.dictionary.com/browse/bigot
Your friend (and most lefties that are have no ability to defend an absurd position) fit the definition perfectly. I like to point this out to them if they won't engage but still want to throw temper tantrums. It really frosts their ass.
There's a really good book on this by Mark Steyn, which details how Islam is taking over Europe though birthrate. America Alone
Insisting that the ANC be allowed to take power is like insisting ISIS be allowed in elections. These are people who necklace their black opponents. They shared a camp with SWAPO in Uganda where they imprisoned and tortured people. More like a commie terrorist organization than the civilized whatever-the-fuck MSM portrays them as.
I cannot imagine the rage I would as an Afrikaner when the government handed power over to them without even trying to negotiate autonomy for whites or something.