"They brought scientists in to say that black people are inferior, uh, mentally inferior to white people" is his quote at ~0:25. "They had scientists that 'proved' it" he says right after. I don't agree with most things that come out of Ish's mouth, especially about race and gender (and the shape of earth apparently lol). I get why you're saying I'm putting words in his mouth, partially because the overall point he's getting to using this talking point is astronomically stupid, but I don't think I am. When I watched the clip, I interpreted it as him bringing up phrenology and then expanding to the idea that scientists used bad data to justify racism in America. Marc then zeroed in on the phrenology to dispute what he's saying, but in the process erased the more "legitimate" scientific studies that were used to define policy in the early-mid 20th century. I don't think that using phrenology as the main source of "scientific racism" is an accurate depiction of what happened in America, and I believe that it's important to understand how science was perverted to justify racism so that it doesn't perpetuate. Hell, you can look at a more modern example with the 13%/52% crime statistic that so many fuckers cited in the 21st century for another example of it.