You can't be a racialist and step into a debate without ever being given the most common and whiniest excuse that niggers were oppressed and discriminated against, or even that they still are today. The discrimination theory is hard to prove because we see that the groups who perform terribly are of lower intelligence and poorer educational qualifications than those perform well (Whites, East Asians and Jews). Even when matched for education to majority groups that do better, we can see that certain groups do poorly in socioeconomic status and earnings. Social-Marxists and the average minority who doesn't want to take responsibility put this down to discrimination; when it doesn't take a genius to figure out that two groups who have the same amount of schooling do not necessarily have the same cognitive abilities or motivation for economic achievement.
In The Bell Curve (1994) we see that when the races are matched for intelligence, the race differences in earnings, socio-economic status, and education virtually disappear. This shows that the differences are not due to Mestizos and Niggers having different cultural values or discrimination against them by whites, but are explained by IQ differences. The differences in poverty, unemployment, welfare, crime and illegitimate births are also reduced when matched for IQ, but they do not disappear.
Even if it was down to discrimination (which it's not) that doesn't explain away the differences of the Chinese and the Jews who outperform whites in their own countries and were discriminated against; nor does it explain away the fact that Native Americans also out perform niggers in the United States, despite living in much worse conditions. Chinese and japanese immigrants outperform the mestizos, mulattos and niggers in South Amerian countries such as Brazil, and even in Jamaica the Whites, Chinese and Mulattoes outperform niggers in every way despite being a very small minority in the country. The same story is told in Trinidad and Tobago.
The discrimination theory doesn't hold much weight in Southeast Asia, where the ethnic Chinese are a minority and lack political power, except in Singapore. They have been discriminated against and sometimes persecuted, yet they're consistently better than the natives. They have higher IQs and outperform the indigenous populations, despite discrimination against them.
The Chinese and Japanese usually come from poor backgrounds to originally do labouring work and have risen in the ranks extraordinarily.
This is mainly because of race differences in intelligence.