In light of the Chicago ruling, an absolute must-read from La Shawn Barber:
The Black Codes, laws set up after the Civil War, continued to restrict the rights of newly freed slaves to own firearms, own or rent farmland, vote, sit on juries, testify against white men, sue and enter into contracts. As de facto slavery, the purpose of the Codes was to maintain the white hierarchy. Some things never die. What dies are the rights of people to protect themselves.