The petitioner, Pete Hernandez, was indicted for the murder of one Joe Espinosa by a grand jury in Jackson County, Texas. He was convicted and sentenced to life imprisonment. The Texas Court of Criminal Appeals affirmed the judgment of the trial court. Tex. Cr. R. , 251 S. W. 2d 531. Prior to the trial, the petitioner, by his counsel, offered timely motions to quash the indictment and the jury panel. He alleged that persons of Mexican descent were systematically excluded from service as jury commissioners, grand jurors, and petit jurors, although there were such persons fully
