Whites might be the minority population in African countries (specifically Africa and Zimbabwe), but they were, and still are for the most part a ruling minorty. Basically imagine 1% of the people controlling 99% of the power and wealth because of their skin color (a little bit like this country I guess...)
Have you ever heard of apartheid?? Yeah that was like segregation in the U.S. only hundreds of times worse. South African slums, where all non-whites were forced to live until the 1990's and most still do, are amongst the poorest, most disadvantaged places in the world. I am aware that currently land reclamition is occuring under government order in Zimbabwe and some innocent whites have had their farms, etc. taken. However, you obviously completely lack any sense of history if you don't believe that native Africans (remember it is their land in the first place) have not had generations of lives utterly destroyed by cruel European rulers. You should read the book 'The Power of One', learn a little something about apartheid and the real story in that part of the world before you try and act like you know what you are talking about.
'There are only two powers in the world...the sword of the oppressor and the spirit of the oppressed. In the long run, the sword is always defeated by the spirit.'