The Jim Crow laws were a systematically racist set of laws passed and placed by the government to legalize racial segregation and restrict African-Americans from partaking in usual daily services, like healthcare. It restricted a lot of lower-class citizens from being able to do a lot of things we take for granted in modern times, sitting on the bus for example.
"The roots of Jim Crow laws began as early as 1865, immediately following the ratification of the 13th Amendment, which abolished slavery in the United States."