You're right, maybe I should have said race instead of skin colour and added sexism to my list of accusations.
For example, any of these studies would drive the internet angry (if they found a strong result):
- Midgets vs IQ
- Attractiveness vs IQ
- Attractiveness vs Likelihood of birth defect
- Wealth vs Emotional Stability
- HN vs Autism Spectrum
- Eye Color vs Empathy
The formula is (visible trait) x (valued trait) x (has this trait already been historically used to justify atrocities).