Nearly 7 billion Homo sapiens sapiens live on Earth. All the same genus, species & subspecies, with much variety including 400,000 different skin colors. Race is a lie with no medical or legal definition. Racists use lies to give DIFFERENT rights to people with different colors.
Every human on Earth is the same subspecies (Homo sapiens sapiens). Our subspecies has 400,000 different skin colors, ranging from EXTREMELY light brown to EXTREMELY dark brown. Ironically not a single person on Earth is WHITE or BLACK. Race is a lie but sadly, racism is real.
Carefully examine this chart of skin tones. For which skin colors should people have less rights? Any ideas on which skin colors should allow us to pay them less? Is it a good idea to allow police to shoot & kill people with certain skin colors, without any serious consequences?
Without any definition for race, you're going to need a lot of charts to enforce laws (or kill orders) associated with skin tone. And a lot of difficult decisions will need to be made when a person is all over the chart. Maybe life & death decisions?