It is part of the established tradition in the use of juries as instruments of public justice that the jury be a body truly representative of the community. For racial discrimination to result in the exclusion from Jury service of otherwise qualified groups not only violates our Constitution and the laws enacted under it, but is at war with our basic concepts of a democratic society and a representative government. We must consider this record in the light of these important principles. The fact that the written words of a state's laws hold out a promise that no such discrimination will be practiced is not enough. The Fourteenth Amendment requires that equal protection to all must be given - not merely promised.