Research in the Netherlands, recently, showed that judges punish people with a North-African complexion harsher (than they do white Dutch people). How this is in the USA I don’t know, but I wouldn’t be overly surprised if it was the same. Injustice is injustice against all people who live under the law of a country, I believe (although the one group that is punished more severe will think (rightly so, I think) that the injustice is bigger on them.