Recently, civil rights litigators persuaded the Minnesota Supreme Court to review school segregation in the state.

Charter advocates, however, are troubled by the legal review of segregation. They think it is worth preserving. Minneapolis has several distinctly segregated charter schools, catering to a single race or ethnic group. They could have made the same arguments in 1896, when Plessy v. Ferguson upheld the principle of “separate but equal” or in 1954, in defense of the 17 states that defended school segregation.

Little wonder that several of Trump’s nominees for federal judgeships have refused to say whether the Brown decision was rightly decided.