Is that Sarf Efrika?
Then the word you're looking for is 'kaffirs'.
from the arabic 'qafir', meaning 'unbeliever', it was used officially by the British government in ZA, there was even a 'Kaffir War' in 1851-53...
(
bnt what, me worry?,
Tue 20 Apr 2004, 19:50,
archived)