Explain the constitutional basis for people's desire to discriminate against people of different races and religions? The CRA exists because a bunch of shithea

Explain the constitutional basis for people's desire to discriminate against people of different races and religions? The CRA exists because a bunch of shithead treason states hate the constitution's requirements that they treat people equally regardless of race. Prior to the CRA specifying that such actions had actual penalties these states routinely prevent PoC from equal employment, equal service, equal pay, and frequently the right to vote. Before you even get to the whole murdering PoC and people who support them and somehow never being able to find the culprits. Look I get it that many people live in this delusional world where the constitution only applies if its beneficial to them, and the protections only apply if it protects them, but things like the CRA and the NLRB exist specifically to deal with those shitheads by saying "just because your state government is racist, sexist, homophobic, anti-non-christians, anti-actual-people's rights, and is generally bigoted doesn't mean you can say those policies supersede the US constitution". These laws, regulations, and institutions all came into existence at the federal level, because of treason states refusing to just obey the actual US constitution, which definitionally supersedes any shitty beliefs those rundown BS states may have. If your argument is "restricting interstate trade in response to violating the constitution" is unconstitutional, I wonder how you reconcile that with punishing people for violating any law? after all isn't incarcerating someone depriving them of their constitutional rights?