Effects of Jim Crow
The Jim Crow laws allowed for the general mistreatment of African Americans. They were almost always given second class treatment, and were made to use public areas that were separate from white people. This was ruled constitutional by the Supreme Court, when they ruled that as long as the different areas were separate but equal, it was fair. They were also often left out of job opportunities, which were often only given to white peoples. This also contributed to the popular belief that white people are superior to blacks. It also caused violence against those who protested against the Jim Crow laws. "The Jim Crow laws and system of etiquette were undergirded by violence, real and threatened. Blacks who violated Jim Crow norms, for example, drinking from the white water fountain or trying to vote, risked their homes, their jobs, even their lives." The JCMoRM says.
End of Jim crow
Jim Crow was officially repealed with the Civil rights act, and the Voting Rights act, which gave black people equal rights and enforced equal treatment. Although Jim Crow is no longer law, it's legacy lives on, and there is still notable traces of descrimination in the United States.