“ The evil lies in the admitted exclusion of an eligible class or group in the community in disregard of the prescribed standards of jury selection. * * * The inquiry is not limited to the defendant-there is injury to the jury system, to the law as an institution, to the community at large, and to the democratic ideal reflected in the process of our courts.'↑ Even if it were assumed that these exclusions were the unavoidable consequences of Los Angeles' method of jury selection, it does not follow that jury panels must be racially unrepresentative of the community. ”

“ The Court today denies certiorari to a Black man who stands convicted by an all-White jury which had been selected through a process which petitioner alleges methodically excluded members of minority racial groups. The most pernicious of the practices used to exclude Black and Chicano jurors was what purported to be an intelligence test which, because of its cultural bias and its blatant unreliability, excluded nearly 50% of the otherwise qualified prospective jurors from minority groups. ”

“ It would seem that this device is illsuited to serve any legitimate state interest and does serve to exclude from jury panels significantly disproportionate numbers of minority groups. The Constitution does not of course require racially-balanced juries because, in our pluralistic society, a group of 12 men and women could not possibly represent all of the ethnic, racial and economic groups which comprise our diverse culture. ”