How did the jim crow law fortify and perpetuate or continue racial discrimination in the United states

Jim Crow laws gave Caucasian Americans a legal backbone to discriminating against African-Americans socially and politically. For example, public restrooms were segregated and usually, Blacks were given the poorer quality ones. or how they would also have to sit in the back of the bus or give up their seat.

The Jim Crow Laws were based on racism, they followed segregation