Maybe you can't override prejudice overnight, but the Emancipation Proclamation was issued in 1863, ninety-odd years ago. I believe in gradualism. I also believe that ninety-odd years is pretty gradual.
Authentication Score 3
Citation
Marshall, Thurgood. "Fighting Back: 1957-1962." Eyes on the Prize, created by Henry Hampton, performances by Thurgood Marshall, season 1, episode 2, Blackside, 1987.