The twelve jurors to whom Monk tries to make a speech are referred to only as "the jury" (42). Given both the cultural realities of Mississippi in the 1930s and the representation of other trials in Faulkner's fictions, one can assume this group was all-white and all-male.
Referred to only as "the Court," the judge who presides over Monk's murder trial in Jefferson plays a significant role in determining its outcome (41): he appoints the lawyer who does such a perfunctory job defending Monk; he may even have directed the lawyer to plead Monk "guilty" (42).