It is not about a group of people. He was asking him because of his skin color, not some group of people. And when the interviewer continued to ask YOU question

It is not about a group of people. He was asking him because of his skin color, not some group of people. And when the interviewer continued to ask YOU questions about your ethnicity is disparaging terms and would not talk tech then what? You may not identify with your ethnicity or skin color but the CEO certainly did. You would have taken the job with someone who only saw you that way? Where is your self respect?