Do we question why white judges in the South for years threw black men in  jail with no evidence or sense of equitable punishment?

I do AGREE that we all carry bias and that includes judges.   And if bias is inescapable, and it is, then maybe we just have to work from the assumption that bias is going to show up in human behavior regardless. 

I also see positive bias (which matches mine of course  lol).  A bias to love children is not common to all.  A bias for financial safety is a reaction to our more primitive instinct for self preservation* *cavemen didn't build up IRA's.   

In a diverse society that requires cooperation, is a bias to one's own tribe going to damage the social structure and potential strength of the community? 

 If religious bias leads to charity, empathy, compassion, I'm OK.  If religious bias is toward killing non believers, I have a problem

Maybe the best we can do is recognize our bias consciously and deal with it.