Dr Grass is from South Africa, I understand (though don't agree with) his emotions. In South Africa, the ANC/Most blacks insist on blaming the countries problems on the white minority from the apartheid era. Similar to other African countries but not as bad as there's a much smaller domestic white presence. Even though there are certain things among white SAs that I don't like, such as frequent use of Afrikaans on "African" portals (IGN, PCFormat) or how they have insane value on land which they more or less got for free (.i.e murdered and killed) they are NOT responsible for most of the countries problems. Just like Britain and the "Imperialists" are not responsible for Zimbabwe problems, even though Britain failed to honor the Lancaster Agreement Zim could have handled things in a much cleaner less extreme fashion.
In regard to science, history is told by the Victor. West loves singing its praises and while there's no denying their contributions acting like they are the alpha and omega is just f@#king retarded. Truth be told whichever society has been dominant over millenia has contributed significantly to science, the most recent just happens to be Europe that heavily built off foundations laid down from the Middle East and Asia. As it stands Asia is steadily taking that crown back, further more its silly to think modern technology is the result of one demographic as the most innovative companies of today employ the best and brightest from all over the world and contrary to popular belief they aren't all Asian.
I do agree with Grass that black people need to take more responsibility. Not play the blame game but damn well get reparations where due no doubt. As for the white demographic have more babies, don't complain otherwise. And you lot are the ones ploughing through the worlds resources at a silly rate so don't come down here talking about birth control, sort yourselves out first.