In 1954 is acknowledged as one of the greatest Supreme Court's decision, it was about racial segregation of children in public schools which, the equal protection clause stated in the fourth amendment. Large portions of United States’ schools were racially segregated. However, by the mid-twentieth century, civil rights groups set up legal and political, challenges to racial segregation, lawyers brought class action lawsuits on behalf of black schoolchildren and their families in Kansas, South Carolina, Virginia, and Delaware, seeking court orders to compel school districts to let black students attend white public schools. Ruby Bridges was a little black girl who was racially discriminated and you can look her up since, she became famous since she persevered thought all of the discrimination from every one.
I think that it caused more tension sectionally because there was already tension between slave and non-slave states so it's growing economy just added more. Hope this helped!! Have a good day :)