From this blog that focuses on treating people as individuals, you have a pertinent article at the American Enterprise Institute
Once you start thinking about human beings as members of classes–so, even if it’s classes that sound initially plausible or neutral, like the rich and the poor, immediately what you begin to do is to see human beings within those classes as being more or less interchangeable…
But the danger that has actually issued real and horrible consequences in human history–once you begin to see people as being interchangeable, at least among classes, this religion, this nationality, this ethnicity, then you begin to dehumanize them. They don’t seem to you like individual centers of human dignity…
But by contrast, when you see instead human beings as being individuals–which, by the way, I think is the correct way to view this, individual centers of human agency, individual centers of human dignity–that completely transforms our relationship to one another.
https://www.aei.org/publication/once-you-begin-to-see-humans-as-the-interchangeable-members-of-a-class-you-begin-to-dehumanize-them/