I constantly see that the current US Supreme Court makes inconstitucional rulings like for example, allowing racial profiling.

For what little I’ve gathered due to separation of powers. The supreme court is just a designated authority. Why hasn’t there been any movement that just aims to de-legitimize the current supreme Court?

Why can’t a judge say “I denounce the Supreme courts authority for their failing to uphold the spirit of the law and now I shall follow this other courts rulings”?