Numerous people here have chided me for my "racism," insisting that race is only skin deep. A 2019 scientific study with a large sample group (9,421) and rigorous standards has some interesting things to say on this topic.
Summary and link to the actual study here: [unz.com]
The important findings of the study are that:
Intelligence is at least 50% and as much as 80% hereditary i.e. not alterable by education or other environmental factors...so, as the saying goes, there is no way to fix stupid.
Particular racial designations correlate very highly with particular intelligence levels...so, African-Americans (a major focus of the study) objectively have a certain level of cognitive "impairment," on average, by European standards.
People's "social construct" view of race, or what race they and society assume they are, matches almost perfectly with their DNA test results...so contrary to liberal rhetoric, a "white person" actually exists, and is objectively definable as a person with largely or purely European ancestry.