Let me preface this with this sort of behavior back during slavery was abhorrent. While it’s not true today, selective breeding of a physical trait is a thing that works. Animal husbandry, GMO crops (go look at what corn was 100 years ago), heck even dogs (look at a pug and a wolf and see how much they changed). If I’m not mistaken, even Yao Ming was a product of the Chinese government encouraging two large Chinese basketball players to marry and have children.
Now would a bastard cop use this flimsy excuse to bully a person of color? Of fucking course they would.