Black Codes (United States)
The Black Codes, also called the Black Laws, were racially segregationist and discriminatory U.S. state laws that limited the freedom of Black Americans but not of white Americans. The first Black Codes applied to "free Negroes", i.e., Black people who lived in states where slavery had been abolished or who lived in a slave state but were not enslaved.
Source: Wikipedia — Black Codes (United States) (CC BY-SA 4.0)