State law cannot violate citizens' rights enumerated in the Constitution.
Brown v. Board of Education of Topeka , 347 U.S. 483 (1954), was a decision of the U.S. Supreme Court in which the court ruled that U.S. state [emphasis mine] laws establishing racial segregation in public schools are unconstitutional, even if the segregated schools are otherwise equal in quality.
Citizens’ rights are NOT enumerated in the Constitution as explained in 9A and 10A. The first 10 amendments are a sampling of rights already belonging to the people. The Constitution does not grant rights to the people like communist country’s constitutions do.
In America, GOD grants those rights (see the Declaration of Independence upon which the Constitution is based). Federal government rights are enumerated in the Constitution. If it’s not a power enumerated in the Constitution, it is NOT a federal power which is why 80+% of the feds are unconstitutional.
Nowhere does the Constitution give the feds power to enforce the first 10 amendments which are pointed exclusively at the feds and nowhere else. As the 9A and 10A explain, the States are sovereign (with a few exceptions like coining money and makeing treaties).