Conservatives believe in a society where people are judged not on the color of their skin, but on the content of their character.
This REALLY pissed off the Black HR manager at my company, but I told him "I don't have to answer to you about my ethnic background or how or why I choose to categorize myself a certain way. If you persist in this illegal questioning I will file an EEOC complaint against you".
He knew he had lost and dropped it.