What were Jim crows laws of the south?

Jim Crow laws were a series of state and local statutes enacted in the southern United States between the late 19th and mid-20th centuries that enforced racial segregation and discrimination against African Americans. These laws mandated the separation of races in public places, schools, transportation, and various aspects of daily life, effectively institutionalizing white supremacy. Jim Crow laws were upheld by the U.S. Supreme Court's 1896 decision in Plessy v. Ferguson, which established the "separate but equal" doctrine. They remained in effect until the Civil Rights Movement led to their repeal in the 1960s.