Democratic California Gov. Gavin Newsom did his best to insult several Southern states in a social media post Thursday. “Confederate states are rushing through rigged maps to erase Black districts off the map,” Newsom wrote above a map demonstrating the possible effects of redistricting in Mississippi, Louisiana, Tennessee, Georgia, Florida, South Carolina, and North Carolina. It is strange we should have “black districts” in the first place. Newsom makes no acknowledgement of this. “If this doesn’t make you angry, it should,” Newsom continued. (An aside: Why wouldn’t a dispassionate analysis suffice? I find the constant encouragement to anger, or joy,...