Answer:
Chief Justice Earl Warren argued in the Brown decision that separate could never be equal because public education—which is a right for every citizen and deserved equal protection in accordance with the Fourteenth Amendment—had separate educational facilities for whites, and for blacks. This implied that both races were treated separately; being separated in such a way could not make them equally protected as expected by the constitution.
The legal document that explains the legal reasoning behind a Supreme Court decision is called a majority opinion. A majority opinion is a judicial decision agreed by more than half of the court. Hope this answers the question.
old fashion prejudice was different from today because back then every thing was one way and they did not like change. And these days prejudice is caused because people think that other people are not "cool" enough to hang out with them. So in the olden days it was because of race, these days its because people are rude and need Jesus.