A small skirmish where about 60 000 people died? According to the TRC, in the about 50 years of Apartheid there has been 7000 political deaths. Do some research on the scorched-earth policy. I must admit, I dont know much about the competing African farmers of the time, so if you can direct me to literature, I'm more than willing to educate myself on the topic. I dont agree with your  statement regarding justifying racial discrimination. That existed long before the Boer wars and came from Britain, not the Afrikaner. "Ordinance No. 49 of 1828 decreed that prospective black immigrants were to be granted passes for the sole purpose of seeking work." That is just one example. The British also started the law that prevented non-whites from purchasing land outside their tribal "reserves". I see or know of no evidence of the Boers exploiting Africans as justification for what the British did to them.