At some point in our lives we all encounter bias. Sometimes it’s overt, but more often than not it’s unconscious on the part of the offender. Of the two types, the unconscious bias is the most difficult for me to deal with, in part because the person doing it is unaware of it, but mostly because of the unmitigated arrogance of most people who do it. They would be gravely offended if you called them on it and would vehemently deny that they are being biased, and unlike the overt bigot who does it, admits it, and feels no remorse for it, would act as if you’ve victimized them for even suggesting that they had discriminated against you.