Eugenics? What eugenics? There is no mention of eugenics in this research paper. Just the eco-fascist narrative that climate change isn't caused by capitalism, but by too many people consuming resources faster than they can be replenished. I'm sure that's not a dangerous idea useful to anyone or anything.
It's obvious no serious discussion can be had here.
I'm not too well versed in US copyright law, but there's a considerable degree of harmonisation across borders with intellectual property and I'm fairly confident that it's perfectly legal for anyone to use short quotations for any purpose with or without a license.