Who Were the Sea Peoples?

I am reading a serious work of history on the early American progressive movement at present. Something that is abundantly clear is that the notion I've seen circulating recently on the Internet, that these progressives were not intimately tied to eugenics movement, is simply propaganda. Eugenics flowed naturally from and fit neatly into the rest of the progressives' views: Imperialism, racism, anti-individualism, and top-down planning by elite experts. These were truly creepy people, and they make it totally understandable why those who oppose them felt the need to forward a doctrine like methodological individualism when faced with opponents for whom the lives of millions of individuals meant nothing, so long as "society" advanced. (Oliver Wendell Holmes famously said that the only thing wrong with war was that it killed the wrong people.) UPDATE: I have now attended the lecture that went with our reading, by Tim Leonard of Princeton, who has devoted ten years of...