KANSAS CITY, Mo., Dec. 9 - It is not that the new chairman of the United States Commission on Civil Rights doubts racial discrimination still exists, as his detractors have charged, it is that he is not quick to see it. He is not sure he has personally experienced it. "I just assume somewhere in my life some knucklehead has looked at me and my brown self and said that they have given me less or denied me an opportunity," said the chairman, Gerald A. Reynolds, 41, an African-American lawyer. "But the bottom line is, and my wife will attest...