Just got to the final chapter of Franz Fanon's Wretched of the Earth (https://libcom.org/library/wretched-earth-frantz-fanon)
He talks about Antoine Porot whose project was to prove that Algerians were biologically inferior to the French. https://en.wikipedia.org/wiki/Antoine_Porot
Fanon also goes on to talk about J. C. Carothers who in the 1950s was commissioned to study the Mau Mau uprising and decided africans had similar brain functioning to lobotomized Europeans. Some of this research is still available via the British Journal of Psychiatry and World Health Organisation which originally published his research: http://bjp.rcpsych.org/content/97/406/12?origin=publication_detail http://apps.who.int/iris/handle/10665/41138
History of psychiatry isn't my area and I hadn't realised state-sponsored scientific racism went right up until the mid-'50s, for example https://en.wikipedia.org/wiki/Scientific_racism claims that it fell out of favour post-war, not really consistent with the WHO publishing Carothers in the mid-50s. Given it does seem to have become more marginal by the '60s, if anything this would seem to mark the general strategic shift from trying to maintain direct military control over colonies vs. granting independence to national elites with economic relations mostly intact.
I'm wondering if there's a decent summary of this that's more recent than Fanon's. Part of the development of the alt-right in the US has been the increasing popularity of 'race realism', and we've seen Charles Murray and various evolutionary psychologists get more mainstream attention. Given the Bell Curve was 1994 that's only a 40 year gap. There are some straight Nazis in the alt-right but there's also plenty closer to 'liberal/academic racism' who obsess about IQ tests etc. and I think a lot of people's history on where this shit comes from and how recently it was being pushed is sketchy.