Hugo Black,
Canizio v. New York — Opinion of the Court
“ Nor can we say with certainty that the presence of counsel at the final stage of the proceeding was sufficient to counteract the prejudice inherent in the prior denial of counsel. Unless all the effects of such a constitutional infirmity are completely and unquestionably eliminated, a conviction cannot stand. An elimination of that nature ordinarily, and particularly in this case, means a new proceeding in which the right to counsel is fully protected at all times. ”
