If someone doesn't like flying with blacks, Asians, Hispanics, women, Muslims, Catholics, Protestants, atheists whites, men, people with excessive bowel gas discharge, people with poor eating habits, people who pick their nose or flying an aircraft decorated like a Mardi Gras float, it's their right to have those opinions.
May be, but if those opinions are expressed in a certain way in a recruitment process, or in the workplace, such people may find that it isn't their guaranteed right to get or keep their job.