Hugo Black,
Louisiana v. United States (380 U.S. 145…
“ The applicant facing a registrar in Louisiana thus has been compelled to leave his voting fate to that official's uncontrolled power to determine whether the applicant's understanding of the Federal or State Constitution is satisfactory. As the evidence showed, colored people, even some with the most advanced education and scholarship, were declared by voting registrars with less education to have an unsatisfactory understanding of the Constitution of Louisiana or of the United States. This is not a test but a trap, sufficient to stop even the most brilliant man on his way to the voting booth. ”
