Long time, no see, Larry

One of the problems is that we're all somewhat 'mixed', dating back to the seven daughters of Eve, or beginning of time &c. A consistent argument at /s/debatealtright/ is that none of this matters because the people who look "white" (or white enough?) are the master race that should rule everyone. (For example, I know someone in India with a British grandmother, who is whiter than many white folks, but she's otherwise completely South Asian. This white supremacist problem is an old colonial eugenic idea that was as illogical then as it is now. That idea is also a social construct, and is not reflected in much of nature or society. One can look at the expectations of conservative Jews in order to see ways in which they try not to taint their blood with that of goyim. But this ethnocentrism again leads to other problems for them, and is one reason conservative Jews have been hated for millennia by goyim. Regardless of whatever breeding strategies they want to use to preserve their ethnicities, the conservatives have consistently reinforced their religious and social expectations to avoid goyim, not to marry them, not to hire them for jobs, not to live near them, not to eat their food, &c. This is one reason Jews have been seen as parasites by non-Jews. There are also conservative Pakistanis who will "honour kill" their daughters if they don't marry the approved Pakistani arranged man, though they're very much in the minority of Pakistanis in general. White supremacists will face similar criticisms for not integrating in society, committing hate crimes &c. The main problem here is not so much the social construct of 'race', but the extremist view that the "other" should be treated like pigs.

https://en.wikipedia.org/wiki/Race_and_society

https://www.scientificamerican.com/article/race-is-a-social-construct-scientists-argue/

https://www.theatlantic.com/national/archive/2013/05/what-we-mean-when-we-say-race-is-a-social-construct/275872/

https://www.vox.com/2014/10/10/6943461/race-social-construct-origins-census

https://www.jstor.org/stable/10.1086/508966

https://www.nytimes.com/roomfordebate/2015/06/16/how-fluid-is-racial-identity/race-and-racial-identity-are-social-constructs

https://centerforhealthprogress.org/blog/race-social-construct/

https://medium.com/the-science-of-human/how-the-brain-invents-race-2c96b2947f3a

sources